#231C90#231C90

#231C90 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.6% C 0.179 H 273.7°. Best body text is #FFFFFF at 12.80:1 contrast (WCAG AA passes).

Color values

HEX	#231C90
RGB	rgb(35, 28, 144)
HSL	hsl(244, 67%, 34%)
HSV	hsv(244, 81%, 56%)
CMYK	cmyk(75.7%, 80.6%, 0%, 43.5%)
CIE-LAB	lab(20.83, 41.88, -61.64)
CIE-LCH	lch(20.83, 74.52, 304.19°)
OKLab	oklab(33.58% 0.0114 -0.1783)
OKLCH	oklch(33.58% 0.179 273.7)
XYZ	xyz(6.1408, 3.2008, 26.6743)
Luminance	0.0320 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231C90 #89901C

analogous

#1C4F90 #231C90 #5D1C90

triadic

#231C90 #90231C #1C9023

tetradic

#231C90 #901C4F #89901C #1C905D

square

#231C90 #901C4F #89901C #1C905D

split-complementary

#231C90 #905D1C #4F901C

monochromatic

#0A082A #17125D #231C90 #2F26C3 #534ADC

Accessibility & contrast

On white

12.80

#231C90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#231C90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231C90

12.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231C90	#FFFFFF	#000000	##FFFFFF
##231C90	1.00	12.80	1.64	12.80
#FFFFFF	12.80	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003793

Deuteranopia (green-blind)

#002D8E

Tritanopia (blue-blind)

#004056

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #231c90;
/* rgb */ color: rgb(35, 28, 144);
/* oklch */ color: oklch(33.6% 0.179 273.7);

Tailwind

colors: {
  custom: {
    50: '#715bb2',
    500: '#231c90',
    950: '#000000',
  },
}

SCSS

$custom: #231c90;
$custom-light: #715bb2;
$custom-dark: #000000;

JSON

{
  "hex": "#231c90",
  "rgb": {
    "r": 35,
    "g": 28,
    "b": 144
  },
  "hsl": {
    "h": 243.621,
    "s": 67.442,
    "l": 33.725
  },
  "oklch": {
    "l": 0.33581,
    "c": 0.1787,
    "h": 273.7
  },
  "luminance": 0.03201
}

Semantic roles & 50–950 ramp

primary

#231C90

secondary

#B7BE4A

accent

#EA3DE0

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #231C90

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

Preview Lab → · Contrast checker → · Palette generator →