#2B31A6#2B31A6

#2B31A6 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.5% C 0.183 H 272.2°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#2B31A6
RGB	rgb(43, 49, 166)
HSL	hsl(237, 59%, 41%)
HSV	hsv(237, 74%, 65%)
CMYK	cmyk(74.1%, 70.5%, 0%, 34.9%)
CIE-LAB	lab(28.01, 37.97, -63.24)
CIE-LCH	lch(28.01, 73.76, 300.98°)
OKLab	oklab(39.52% 0.0069 -0.1829)
OKLCH	oklch(39.52% 0.183 272.2)
XYZ	xyz(8.9752, 5.4625, 36.6504)
Luminance	0.0546 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B31A6 #A6A02B

analogous

#2B6EA6 #2B31A6 #622BA6

triadic

#2B31A6 #A62B31 #31A62B

tetradic

#2B31A6 #A62B6E #A6A02B #2BA662

square

#2B31A6 #A62B6E #A6A02B #2BA662

split-complementary

#2B31A6 #A6622B #6EA62B

monochromatic

#121445 #1E2375 #2B31A6 #4147CE #7176DA

Accessibility & contrast

On white

10.04

#2B31A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#2B31A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B31A6

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B31A6	#FFFFFF	#000000	##FFFFFF
##2B31A6	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048AA

Deuteranopia (green-blind)

#003CA4

Tritanopia (blue-blind)

#005168

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2b31a6;
/* rgb */ color: rgb(43, 49, 166);
/* oklch */ color: oklch(39.5% 0.183 272.2);

Tailwind

colors: {
  custom: {
    50: '#786ac2',
    500: '#2b31a6',
    950: '#000000',
  },
}

SCSS

$custom: #2b31a6;
$custom-light: #786ac2;
$custom-dark: #000000;

JSON

{
  "hex": "#2b31a6",
  "rgb": {
    "r": 43,
    "g": 49,
    "b": 166
  },
  "hsl": {
    "h": 237.073,
    "s": 58.852,
    "l": 40.98
  },
  "oklch": {
    "l": 0.39516,
    "c": 0.18307,
    "h": 272.2
  },
  "luminance": 0.05463
}

Semantic roles & 50–950 ramp

primary

#2B31A6

secondary

#C1BD6B

accent

#DA46E2

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2B31A6

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

Preview Lab → · Contrast checker → · Palette generator →