#231F8A#231F8A

#231F8A is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.3% C 0.168 H 273.9°. Best body text is #FFFFFF at 12.85:1 contrast (WCAG AA passes).

Color values

HEX	#231F8A
RGB	rgb(35, 31, 138)
HSL	hsl(242, 63%, 33%)
HSV	hsv(242, 78%, 54%)
CMYK	cmyk(74.6%, 77.5%, 0%, 45.9%)
CIE-LAB	lab(20.72, 38.23, -58.09)
CIE-LCH	lch(20.72, 69.54, 303.35°)
OKLab	oklab(33.3% 0.0115 -0.168)
OKLCH	oklch(33.3% 0.168 273.9)
XYZ	xyz(5.7690, 3.1717, 24.3480)
Luminance	0.0317 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F8A #868A1F

analogous

#1F508A #231F8A #581F8A

triadic

#231F8A #8A231F #1F8A23

tetradic

#231F8A #8A1F50 #868A1F #1F8A58

square

#231F8A #8A1F50 #868A1F #1F8A58

split-complementary

#231F8A #8A581F #508A1F

monochromatic

#0A0926 #161458 #231F8A #302ABC #524CD7

Accessibility & contrast

On white

12.85

#231F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#231F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F8A

12.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F8A	#FFFFFF	#000000	##FFFFFF
##231F8A	1.00	12.85	1.63	12.85
#FFFFFF	12.85	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378D

Deuteranopia (green-blind)

#002D88

Tritanopia (blue-blind)

#003F53

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #231f8a;
/* rgb */ color: rgb(35, 31, 138);
/* oklch */ color: oklch(33.3% 0.168 273.9);

Tailwind

colors: {
  custom: {
    50: '#705cad',
    500: '#231f8a',
    950: '#000000',
  },
}

SCSS

$custom: #231f8a;
$custom-light: #705cad;
$custom-dark: #000000;

JSON

{
  "hex": "#231f8a",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 138
  },
  "hsl": {
    "h": 242.243,
    "s": 63.314,
    "l": 33.137
  },
  "oklch": {
    "l": 0.333,
    "c": 0.16842,
    "h": 273.9
  },
  "luminance": 0.03172
}

Semantic roles & 50–950 ramp

primary

#231F8A

secondary

#B5BA4B

accent

#E641E0

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #231F8A

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

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