#2B31A3#2B31A3

#2B31A3 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.2% C 0.179 H 272.3°. Best body text is #FFFFFF at 10.14:1 contrast (WCAG AA passes).

Color values

HEX	#2B31A3
RGB	rgb(43, 49, 163)
HSL	hsl(237, 58%, 40%)
HSV	hsv(237, 74%, 64%)
CMYK	cmyk(73.6%, 69.9%, 0%, 36.1%)
CIE-LAB	lab(27.72, 36.92, -61.91)
CIE-LCH	lch(27.72, 72.08, 300.81°)
OKLab	oklab(39.22% 0.0073 -0.1791)
OKLCH	oklch(39.22% 0.179 272.3)
XYZ	xyz(8.7032, 5.3537, 35.2179)
Luminance	0.0536 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B31A3 #A39D2B

analogous

#2B6DA3 #2B31A3 #612BA3

triadic

#2B31A3 #A32B31 #31A32B

tetradic

#2B31A3 #A32B6D #A39D2B #2BA361

square

#2B31A3 #A32B6D #A39D2B #2BA361

split-complementary

#2B31A3 #A3612B #6DA32B

monochromatic

#111442 #1E2273 #2B31A3 #3F46CC #6F75D9

Accessibility & contrast

On white

10.14

#2B31A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#2B31A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B31A3

10.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B31A3	#FFFFFF	#000000	##FFFFFF
##2B31A3	1.00	10.14	2.07	10.14
#FFFFFF	10.14	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A6

Deuteranopia (green-blind)

#003CA1

Tritanopia (blue-blind)

#005066

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #2b31a3;
/* rgb */ color: rgb(43, 49, 163);
/* oklch */ color: oklch(39.2% 0.179 272.3);

Tailwind

colors: {
  custom: {
    50: '#776abf',
    500: '#2b31a3',
    950: '#000000',
  },
}

SCSS

$custom: #2b31a3;
$custom-light: #776abf;
$custom-dark: #000000;

JSON

{
  "hex": "#2b31a3",
  "rgb": {
    "r": 43,
    "g": 49,
    "b": 163
  },
  "hsl": {
    "h": 237,
    "s": 58.252,
    "l": 40.392
  },
  "oklch": {
    "l": 0.39215,
    "c": 0.17921,
    "h": 272.3
  },
  "luminance": 0.05355
}

Semantic roles & 50–950 ramp

primary

#2B31A3

secondary

#C0BC6A

accent

#DA46E1

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2B31A3

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

Preview Lab → · Contrast checker → · Palette generator →