#231771#231771

#231771 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.4% C 0.144 H 278.7°. Best body text is #FFFFFF at 14.66:1 contrast (WCAG AA passes).

Color values

HEX	#231771
RGB	rgb(35, 23, 113)
HSL	hsl(248, 66%, 27%)
HSV	hsv(248, 80%, 44%)
CMYK	cmyk(69%, 79.6%, 0%, 55.7%)
CIE-LAB	lab(16.32, 34.33, -49.44)
CIE-LCH	lch(16.32, 60.19, 304.77°)
OKLab	oklab(29.37% 0.0219 -0.1428)
OKLCH	oklch(29.37% 0.144 278.7)
XYZ	xyz(3.9792, 2.1620, 15.8272)
Luminance	0.0216 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231771 #657117

analogous

#173871 #231771 #501771

triadic

#231771 #712317 #177123

tetradic

#231771 #711738 #657117 #177150

square

#231771 #711738 #657117 #177150

split-complementary

#231771 #715017 #387117

monochromatic

#080519 #130D3E #231771 #3321A4 #442ED4

Accessibility & contrast

On white

14.66

#231771 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#231771 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231771

14.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231771	#FFFFFF	#000000	##FFFFFF
##231771	1.00	14.66	1.43	14.66
#FFFFFF	14.66	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C74

Deuteranopia (green-blind)

#00256F

Tritanopia (blue-blind)

#003143

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #231771;
/* rgb */ color: rgb(35, 23, 113);
/* oklch */ color: oklch(29.4% 0.144 278.7);

Tailwind

colors: {
  custom: {
    50: '#6a569b',
    500: '#231771',
    950: '#000000',
  },
}

SCSS

$custom: #231771;
$custom-light: #6a569b;
$custom-dark: #000000;

JSON

{
  "hex": "#231771",
  "rgb": {
    "r": 35,
    "g": 23,
    "b": 113
  },
  "hsl": {
    "h": 248,
    "s": 66.176,
    "l": 26.667
  },
  "oklch": {
    "l": 0.29367,
    "c": 0.14445,
    "h": 278.7
  },
  "luminance": 0.02162
}

Semantic roles & 50–950 ramp

primary

#231771

secondary

#99A73D

accent

#E93FD2

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #231771

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

Preview Lab → · Contrast checker → · Palette generator →