#2B31BA#2B31BA

#2B31BA is a dark, highly saturated blue. Relative luminance 0.063; OKLCH L 41.6% C 0.208 H 271.1°. Best body text is #FFFFFF at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#2B31BA
RGB	rgb(43, 49, 186)
HSL	hsl(237, 62%, 45%)
HSV	hsv(237, 77%, 73%)
CMYK	cmyk(76.9%, 73.7%, 0%, 27.1%)
CIE-LAB	lab(30.04, 44.86, -71.84)
CIE-LCH	lch(30.04, 84.70, 301.98°)
OKLab	oklab(41.58% 0.0041 -0.208)
OKLCH	oklch(41.58% 0.208 271.1)
XYZ	xyz(10.9545, 6.2542, 47.0747)
Luminance	0.0625 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B31BA #BAB42B

analogous

#2B78BA #2B31BA #6D2BBA

triadic

#2B31BA #BA2B31 #31BA2B

tetradic

#2B31BA #BA2B78 #BAB42B #2BBA6D

square

#2B31BA #BA2B78 #BAB42B #2BBA6D

split-complementary

#2B31BA #BA6D2B #78BA2B

monochromatic

#141757 #202488 #2B31BA #4C52D6 #7E82E1

Accessibility & contrast

On white

9.33

#2B31BA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#2B31BA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B31BA

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B31BA	#FFFFFF	#000000	##FFFFFF
##2B31BA	1.00	9.33	2.25	9.33
#FFFFFF	9.33	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EBE

Deuteranopia (green-blind)

#0040B8

Tritanopia (blue-blind)

#005973

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #2b31ba;
/* rgb */ color: rgb(43, 49, 186);
/* oklch */ color: oklch(41.6% 0.208 271.1);

Tailwind

colors: {
  custom: {
    50: '#7d6ad0',
    500: '#2b31ba',
    950: '#000000',
  },
}

SCSS

$custom: #2b31ba;
$custom-light: #7d6ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#2b31ba",
  "rgb": {
    "r": 43,
    "g": 49,
    "b": 186
  },
  "hsl": {
    "h": 237.483,
    "s": 62.445,
    "l": 44.902
  },
  "oklch": {
    "l": 0.41579,
    "c": 0.20805,
    "h": 271.1
  },
  "luminance": 0.06255
}

Semantic roles & 50–950 ramp

primary

#2B31BA

secondary

#CAC677

accent

#DF42E6

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0B0714

muted

#7C7A83

Preview Lab

Preview with #2B31BA

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

Preview Lab → · Contrast checker → · Palette generator →