#2A31A4#2A31A4

#2A31A4 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.3% C 0.181 H 271.9°. Best body text is #FFFFFF at 10.13:1 contrast (WCAG AA passes).

Color values

HEX	#2A31A4
RGB	rgb(42, 49, 164)
HSL	hsl(237, 59%, 40%)
HSV	hsv(237, 74%, 64%)
CMYK	cmyk(74.4%, 70.1%, 0%, 35.7%)
CIE-LAB	lab(27.76, 37.16, -62.45)
CIE-LCH	lch(27.76, 72.67, 300.76°)
OKLab	oklab(39.26% 0.0061 -0.1807)
OKLCH	oklch(39.26% 0.181 271.9)
XYZ	xyz(8.7517, 5.3683, 35.6897)
Luminance	0.0537 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A31A4 #A49D2A

analogous

#2A6EA4 #2A31A4 #602AA4

triadic

#2A31A4 #A42A31 #31A42A

tetradic

#2A31A4 #A42A6E #A49D2A #2AA460

square

#2A31A4 #A42A6E #A49D2A #2AA460

split-complementary

#2A31A4 #A4602A #6EA42A

monochromatic

#111443 #1E2273 #2A31A4 #3E46CD #6E75DA

Accessibility & contrast

On white

10.13

#2A31A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#2A31A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A31A4

10.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A31A4	#FFFFFF	#000000	##FFFFFF
##2A31A4	1.00	10.13	2.07	10.13
#FFFFFF	10.13	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A7

Deuteranopia (green-blind)

#003CA2

Tritanopia (blue-blind)

#005166

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2a31a4;
/* rgb */ color: rgb(42, 49, 164);
/* oklch */ color: oklch(39.3% 0.181 271.9);

Tailwind

colors: {
  custom: {
    50: '#776ac0',
    500: '#2a31a4',
    950: '#000000',
  },
}

SCSS

$custom: #2a31a4;
$custom-light: #776ac0;
$custom-dark: #000000;

JSON

{
  "hex": "#2a31a4",
  "rgb": {
    "r": 42,
    "g": 49,
    "b": 164
  },
  "hsl": {
    "h": 236.557,
    "s": 59.223,
    "l": 40.392
  },
  "oklch": {
    "l": 0.39258,
    "c": 0.18077,
    "h": 271.9
  },
  "luminance": 0.05369
}

Semantic roles & 50–950 ramp

primary

#2A31A4

secondary

#C1BC69

accent

#D945E2

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2A31A4

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

Preview Lab → · Contrast checker → · Palette generator →