#231B93#231B93

#231B93 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.8% C 0.183 H 273.5°. Best body text is #FFFFFF at 12.73:1 contrast (WCAG AA passes).

Color values

HEX	#231B93
RGB	rgb(35, 27, 147)
HSL	hsl(244, 69%, 34%)
HSV	hsv(244, 82%, 58%)
CMYK	cmyk(76.2%, 81.6%, 0%, 42.4%)
CIE-LAB	lab(21.01, 43.37, -63.21)
CIE-LCH	lch(21.01, 76.66, 304.45°)
OKLab	oklab(33.81% 0.0111 -0.1829)
OKLCH	oklch(33.81% 0.183 273.5)
XYZ	xyz(6.3498, 3.2471, 27.8902)
Luminance	0.0325 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B93 #8B931B

analogous

#1B4F93 #231B93 #5F1B93

triadic

#231B93 #93231B #1B9323

tetradic

#231B93 #931B4F #8B931B #1B935F

square

#231B93 #931B4F #8B931B #1B935F

split-complementary

#231B93 #935F1B #4F931B

monochromatic

#0A082C #17125F #231B93 #2F24C7 #544BDE

Accessibility & contrast

On white

12.73

#231B93 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#231B93 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B93

12.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B93	#FFFFFF	#000000	##FFFFFF
##231B93	1.00	12.73	1.65	12.73
#FFFFFF	12.73	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003896

Deuteranopia (green-blind)

#002D91

Tritanopia (blue-blind)

#004057

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #231b93;
/* rgb */ color: rgb(35, 27, 147);
/* oklch */ color: oklch(33.8% 0.183 273.5);

Tailwind

colors: {
  custom: {
    50: '#725bb4',
    500: '#231b93',
    950: '#000000',
  },
}

SCSS

$custom: #231b93;
$custom-light: #725bb4;
$custom-dark: #000000;

JSON

{
  "hex": "#231b93",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 147
  },
  "hsl": {
    "h": 244,
    "s": 68.966,
    "l": 34.118
  },
  "oklch": {
    "l": 0.33808,
    "c": 0.18319,
    "h": 273.5
  },
  "luminance": 0.03248
}

Semantic roles & 50–950 ramp

primary

#231B93

secondary

#B8C04A

accent

#EC3CE0

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #231B93

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

Preview Lab → · Contrast checker → · Palette generator →