4169E1 (royalblue) — RGB, HSL, CMYK and Contrast

Q: What text colour should sit on 4169E1?

Black gives 4.33:1 and white gives 4.85:1, so white wins at 4.85:1. That clears the 4.5:1 AA threshold for normal text, but not the 7:1 AAA threshold.

Every value recomputed from the hex code · WCAG 2.1 contrast ratios

A blue at 57% lightness and 73% saturation, which puts it at 4.85:1 against white and 4.33:1 against black. The tables below give the notation conversions, the tints and shades that keep the hue intact, and the harmonies that pair with it.

4169E1

Notation conversions

Notation	Value
HEX	`4169E1`
RGB	rgb(65, 105, 225)
HSL	hsl(225, 73%, 57%)
CMYK	cmyk(71%, 53%, 0%, 12%)
Relative luminance	0.1666
Perceived brightness	41.9 / 100

R=65 G=105 B=225 · hue 225.0° · saturation 72.7% · lightness 56.9%

Contrast against pure white and pure black

Pair this colour with the two extremes to see which is the safer text partner. AA needs 4.5:1 for body text and 3:1 for large text; AAA raises that to 7:1 and 4.5:1.

Against	Hex	Ratio	AA text	AA large	AAA text
#FFFFFF	`white`	4.85:1	pass	pass	fail
#000000	`black`	4.33:1	fail	pass	fail

Tints and shades

Lightness moves in ten-point steps while hue and saturation stay fixed, which keeps the colour recognisable in a scale. The last column is the ratio against white text, useful for deciding where a scale stops working as a background.

Step	Hex	HSL	vs white text
shade -30	`#132c76`	hsl(225, 73%, 27%)	12.73:1
shade -20	`#1a3ca2`	hsl(225, 73%, 37%)	9.49:1
shade -10	`#214cce`	hsl(225, 73%, 47%)	7.02:1
tint +10	`#6d8ce8`	hsl(225, 73%, 67%)	3.20:1
tint +20	`#99afef`	hsl(225, 73%, 77%)	2.16:1
tint +30	`#c5d1f6`	hsl(225, 73%, 87%)	1.52:1

Harmonies

Scheme	Hex
Complementary	`#e1b941`
Analogous −30	`#41b9e1`
Analogous +30	`#6941e1`
Triadic −120	`#69e141`
Triadic +120	`#e14169`

Take the channels apart and the numbers hold together: 65, 105 and 225 average 132, the strongest channel is 225 and the weakest 65, and that span is what pushes saturation to 72.7% at hue 225.0° and lightness 56.9%. Luminance 0.1666 with perceived brightness 41.9 out of 100 is why the white ratio (4.85:1) and the black ratio (4.33:1) diverge by 0.51. Entry 43 of 69, it steps to #132c76 at minus thirty and #c5d1f6 at plus thirty.

Nearby colours

0000FF blue 708090 slategray 2196F3 Blue 500 4B0082 indigo 663399 rebeccapurple 673AB7 Deep Purple 500

Frequently asked questions

What text colour should sit on 4169E1?
Black gives 4.33:1 and white gives 4.85:1, so white wins at 4.85:1. That clears the 4.5:1 AA threshold for normal text, but not the 7:1 AAA threshold.

Do the CMYK numbers match a print workflow?
They are the naive conversion from RGB, which assumes no ink limit, no colour profile and no black generation strategy. Real print work needs a profile-aware conversion; the values here are the ones the converter reports and are best used as a starting point for a designer rather than a press-ready separations file.

Convert any other colour, or test a pair against each other, in the ColrShift colour converter and contrast checker. The colour library groups every entry on this site by hue family.