#2B31A4#2B31A4

#2B31A4 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.3% C 0.180 H 272.3°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#2B31A4
RGB	rgb(43, 49, 164)
HSL	hsl(237, 58%, 41%)
HSV	hsv(237, 74%, 64%)
CMYK	cmyk(73.8%, 70.1%, 0%, 35.7%)
CIE-LAB	lab(27.82, 37.27, -62.35)
CIE-LCH	lch(27.82, 72.64, 300.87°)
OKLab	oklab(39.32% 0.0072 -0.1804)
OKLCH	oklch(39.32% 0.181 272.3)
XYZ	xyz(8.7932, 5.3897, 35.6917)
Luminance	0.0539 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B31A4 #A49E2B

analogous

#2B6DA4 #2B31A4 #612BA4

triadic

#2B31A4 #A42B31 #31A42B

tetradic

#2B31A4 #A42B6D #A49E2B #2BA461

square

#2B31A4 #A42B6D #A49E2B #2BA461

split-complementary

#2B31A4 #A4612B #6DA42B

monochromatic

#121443 #1E2374 #2B31A4 #3F46CD #7075D9

Accessibility & contrast

On white

10.10

#2B31A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#2B31A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B31A4

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B31A4	#FFFFFF	#000000	##FFFFFF
##2B31A4	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	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: #2b31a4;
/* rgb */ color: rgb(43, 49, 164);
/* oklch */ color: oklch(39.3% 0.180 272.3);

Tailwind

colors: {
  custom: {
    50: '#776ac0',
    500: '#2b31a4',
    950: '#000000',
  },
}

SCSS

$custom: #2b31a4;
$custom-light: #776ac0;
$custom-dark: #000000;

JSON

{
  "hex": "#2b31a4",
  "rgb": {
    "r": 43,
    "g": 49,
    "b": 164
  },
  "hsl": {
    "h": 237.025,
    "s": 58.454,
    "l": 40.588
  },
  "oklch": {
    "l": 0.39315,
    "c": 0.1805,
    "h": 272.3
  },
  "luminance": 0.05391
}

Semantic roles & 50–950 ramp

primary

#2B31A4

secondary

#C1BC6A

accent

#DA46E2

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2B31A4

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

Preview Lab → · Contrast checker → · Palette generator →