#231B6A#231B6A

#231B6A is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.2% C 0.131 H 279.1°. Best body text is #FFFFFF at 14.62:1 contrast (WCAG AA passes).

Color values

HEX	#231B6A
RGB	rgb(35, 27, 106)
HSL	hsl(246, 59%, 26%)
HSV	hsv(246, 75%, 42%)
CMYK	cmyk(67%, 74.5%, 0%, 58.4%)
CIE-LAB	lab(16.41, 29.53, -44.72)
CIE-LCH	lch(16.41, 53.59, 303.44°)
OKLab	oklab(29.21% 0.0207 -0.129)
OKLCH	oklch(29.21% 0.131 279.1)
XYZ	xyz(3.6858, 2.1815, 13.8597)
Luminance	0.0218 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B6A #626A1B

analogous

#1B3A6A #231B6A #4A1B6A

triadic

#231B6A #6A231B #1B6A23

tetradic

#231B6A #6A1B3A #626A1B #1B6A4A

square

#231B6A #6A1B3A #626A1B #1B6A4A

split-complementary

#231B6A #6A4A1B #3A6A1B

monochromatic

#080618 #130F39 #231B6A #33279B #4334CB

Accessibility & contrast

On white

14.62

#231B6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#231B6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B6A

14.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B6A	#FFFFFF	#000000	##FFFFFF
##231B6A	1.00	14.62	1.44	14.62
#FFFFFF	14.62	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C6C

Deuteranopia (green-blind)

#002569

Tritanopia (blue-blind)

#003140

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #231b6a;
/* rgb */ color: rgb(35, 27, 106);
/* oklch */ color: oklch(29.2% 0.131 279.1);

Tailwind

colors: {
  custom: {
    50: '#685895',
    500: '#231b6a',
    950: '#000000',
  },
}

SCSS

$custom: #231b6a;
$custom-light: #685895;
$custom-dark: #000000;

JSON

{
  "hex": "#231b6a",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 106
  },
  "hsl": {
    "h": 246.076,
    "s": 59.398,
    "l": 26.078
  },
  "oklch": {
    "l": 0.29209,
    "c": 0.13069,
    "h": 279.1
  },
  "luminance": 0.02182
}

Semantic roles & 50–950 ramp

primary

#231B6A

secondary

#969F42

accent

#E345D3

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030D

muted

#7A787E

Preview Lab

Preview with #231B6A

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

Preview Lab → · Contrast checker → · Palette generator →