#42479E#42479E

#42479E is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.3% C 0.139 H 276.6°. Best body text is #FFFFFF at 8.00:1 contrast (WCAG AA passes).

Color values

HEX	#42479E
RGB	rgb(66, 71, 158)
HSL	hsl(237, 41%, 44%)
HSV	hsv(237, 58%, 62%)
CMYK	cmyk(58.2%, 55.1%, 0%, 38%)
CIE-LAB	lab(34.26, 24.57, -48.16)
CIE-LCH	lch(34.26, 54.07, 297.03°)
OKLab	oklab(44.29% 0.0161 -0.138)
OKLCH	oklch(44.29% 0.139 276.6)
XYZ	xyz(10.6696, 8.1326, 33.3486)
Luminance	0.0813 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42479E #9E9942

analogous

#42759E #42479E #6B429E

triadic

#42479E #9E4247 #479E42

tetradic

#42479E #9E4275 #9E9942 #429E6B

square

#42479E #9E4275 #9E9942 #429E6B

split-complementary

#42479E #9E6B42 #759E42

monochromatic

#1E2048 #303473 #42479E #6065BD #8C8FCF

Accessibility & contrast

On white

8.00

#42479E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#42479E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42479E

8.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42479E	#FFFFFF	#000000	##FFFFFF
##42479E	1.00	8.00	2.63	8.00
#FFFFFF	8.00	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	8.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E54A1

Deuteranopia (green-blind)

#004D9C

Tritanopia (blue-blind)

#085B6B

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #42479e;
/* rgb */ color: rgb(66, 71, 158);
/* oklch */ color: oklch(44.3% 0.139 276.6);

Tailwind

colors: {
  custom: {
    50: '#7f7abb',
    500: '#42479e',
    950: '#000000',
  },
}

SCSS

$custom: #42479e;
$custom-light: #7f7abb;
$custom-dark: #000000;

JSON

{
  "hex": "#42479e",
  "rgb": {
    "r": 66,
    "g": 71,
    "b": 158
  },
  "hsl": {
    "h": 236.739,
    "s": 41.071,
    "l": 43.922
  },
  "oklch": {
    "l": 0.44294,
    "c": 0.1389,
    "h": 276.6
  },
  "luminance": 0.08133
}

Semantic roles & 50–950 ramp

primary

#42479E

secondary

#BAB782

accent

#CA57D1

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #42479E

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →