#231B94#231B94

#231B94 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.9% C 0.184 H 273.4°. Best body text is #FFFFFF at 12.68:1 contrast (WCAG AA passes).

Color values

HEX	#231B94
RGB	rgb(35, 27, 148)
HSL	hsl(244, 69%, 34%)
HSV	hsv(244, 82%, 58%)
CMYK	cmyk(76.4%, 81.8%, 0%, 42%)
CIE-LAB	lab(21.13, 43.69, -63.63)
CIE-LCH	lch(21.13, 77.19, 304.47°)
OKLab	oklab(33.92% 0.0108 -0.1841)
OKLCH	oklch(33.92% 0.184 273.4)
XYZ	xyz(6.4286, 3.2786, 28.3053)
Luminance	0.0328 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B94 #8C941B

analogous

#1B5094 #231B94 #601B94

triadic

#231B94 #94231B #1B9423

tetradic

#231B94 #941B50 #8C941B #1B9460

square

#231B94 #941B50 #8C941B #1B9460

split-complementary

#231B94 #94601B #50941B

monochromatic

#0B082C #171260 #231B94 #2F24C8 #554BDE

Accessibility & contrast

On white

12.68

#231B94 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#231B94 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B94

12.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B94	#FFFFFF	#000000	##FFFFFF
##231B94	1.00	12.68	1.66	12.68
#FFFFFF	12.68	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003897

Deuteranopia (green-blind)

#002D92

Tritanopia (blue-blind)

#004158

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #231b94;
/* rgb */ color: rgb(35, 27, 148);
/* oklch */ color: oklch(33.9% 0.184 273.4);

Tailwind

colors: {
  custom: {
    50: '#735bb5',
    500: '#231b94',
    950: '#000000',
  },
}

SCSS

$custom: #231b94;
$custom-light: #735bb5;
$custom-dark: #000000;

JSON

{
  "hex": "#231b94",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 148
  },
  "hsl": {
    "h": 243.967,
    "s": 69.143,
    "l": 34.314
  },
  "oklch": {
    "l": 0.33925,
    "c": 0.1844,
    "h": 273.4
  },
  "luminance": 0.03279
}

Semantic roles & 50–950 ramp

primary

#231B94

secondary

#B8C04B

accent

#EC3CE0

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #231B94

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

Preview Lab → · Contrast checker → · Palette generator →