#42479C#42479C

#42479C is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.1% C 0.136 H 276.7°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#42479C
RGB	rgb(66, 71, 156)
HSL	hsl(237, 41%, 44%)
HSV	hsv(237, 58%, 61%)
CMYK	cmyk(57.7%, 54.5%, 0%, 38.8%)
CIE-LAB	lab(34.12, 23.88, -47.18)
CIE-LCH	lch(34.12, 52.88, 296.85°)
OKLab	oklab(44.14% 0.016 -0.1351)
OKLCH	oklch(44.14% 0.136 276.7)
XYZ	xyz(10.4988, 8.0643, 32.4494)
Luminance	0.0806 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42479C #9C9742

analogous

#42749C #42479C #6A429C

triadic

#42479C #9C4247 #479C42

tetradic

#42479C #9C4274 #9C9742 #429C6A

square

#42479C #9C4274 #9C9742 #429C6A

split-complementary

#42479C #9C6A42 #749C42

monochromatic

#1E2046 #303371 #42479C #6065BC #8B8ECE

Accessibility & contrast

On white

8.04

#42479C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#42479C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42479C

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42479C	#FFFFFF	#000000	##FFFFFF
##42479C	1.00	8.04	2.61	8.04
#FFFFFF	8.04	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13549F

Deuteranopia (green-blind)

#004D9A

Tritanopia (blue-blind)

#0D5B6A

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #42479c;
/* rgb */ color: rgb(66, 71, 156);
/* oklch */ color: oklch(44.1% 0.136 276.7);

Tailwind

colors: {
  custom: {
    50: '#7e7aba',
    500: '#42479c',
    950: '#000000',
  },
}

SCSS

$custom: #42479c;
$custom-light: #7e7aba;
$custom-dark: #000000;

JSON

{
  "hex": "#42479c",
  "rgb": {
    "r": 66,
    "g": 71,
    "b": 156
  },
  "hsl": {
    "h": 236.667,
    "s": 40.541,
    "l": 43.529
  },
  "oklch": {
    "l": 0.44143,
    "c": 0.13602,
    "h": 276.7
  },
  "luminance": 0.08065
}

Semantic roles & 50–950 ramp

primary

#42479C

secondary

#B9B681

accent

#CA57D0

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #42479C

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

Preview Lab → · Contrast checker → · Palette generator →