#42479D#42479D

#42479D is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.2% C 0.137 H 276.7°. Best body text is #FFFFFF at 8.02:1 contrast (WCAG AA passes).

Color values

HEX	#42479D
RGB	rgb(66, 71, 157)
HSL	hsl(237, 41%, 44%)
HSV	hsv(237, 58%, 62%)
CMYK	cmyk(58%, 54.8%, 0%, 38.4%)
CIE-LAB	lab(34.19, 24.23, -47.67)
CIE-LCH	lch(34.19, 53.48, 296.94°)
OKLab	oklab(44.22% 0.016 -0.1365)
OKLCH	oklch(44.22% 0.137 276.7)
XYZ	xyz(10.5839, 8.0983, 32.8972)
Luminance	0.0810 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42479D #9D9842

analogous

#42749D #42479D #6A429D

triadic

#42479D #9D4247 #479D42

tetradic

#42479D #9D4274 #9D9842 #429D6A

square

#42479D #9D4274 #9D9842 #429D6A

split-complementary

#42479D #9D6A42 #749D42

monochromatic

#1E2047 #303472 #42479D #6065BC #8B8FCE

Accessibility & contrast

On white

8.02

#42479D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#42479D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42479D

8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42479D	#FFFFFF	#000000	##FFFFFF
##42479D	1.00	8.02	2.62	8.02
#FFFFFF	8.02	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1154A0

Deuteranopia (green-blind)

#004D9B

Tritanopia (blue-blind)

#0B5B6B

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #42479d;
/* rgb */ color: rgb(66, 71, 157);
/* oklch */ color: oklch(44.2% 0.137 276.7);

Tailwind

colors: {
  custom: {
    50: '#7f7aba',
    500: '#42479d',
    950: '#000000',
  },
}

SCSS

$custom: #42479d;
$custom-light: #7f7aba;
$custom-dark: #000000;

JSON

{
  "hex": "#42479d",
  "rgb": {
    "r": 66,
    "g": 71,
    "b": 157
  },
  "hsl": {
    "h": 236.703,
    "s": 40.807,
    "l": 43.725
  },
  "oklch": {
    "l": 0.44218,
    "c": 0.13747,
    "h": 276.7
  },
  "luminance": 0.08099
}

Semantic roles & 50–950 ramp

primary

#42479D

secondary

#B9B682

accent

#CA57D1

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #42479D

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

Preview Lab → · Contrast checker → · Palette generator →