#231C9F#231C9F

#231C9F is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.3% C 0.197 H 272.3°. Best body text is #FFFFFF at 12.08:1 contrast (WCAG AA passes).

Color values

HEX	#231C9F
RGB	rgb(35, 28, 159)
HSL	hsl(243, 70%, 37%)
HSV	hsv(243, 82%, 62%)
CMYK	cmyk(78%, 82.4%, 0%, 37.6%)
CIE-LAB	lab(22.62, 46.69, -67.92)
CIE-LCH	lch(22.62, 82.42, 304.51°)
OKLab	oklab(35.35% 0.0078 -0.1965)
OKLCH	oklch(35.35% 0.197 272.3)
XYZ	xyz(7.3643, 3.6902, 33.1183)
Luminance	0.0369 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231C9F #989F1C

analogous

#1C579F #231C9F #651C9F

triadic

#231C9F #9F231C #1C9F23

tetradic

#231C9F #9F1C57 #989F1C #1C9F65

square

#231C9F #9F1C57 #989F1C #1C9F65

split-complementary

#231C9F #9F651C #579F1C

monochromatic

#0C0A37 #18136B #231C9F #2E25D3 #5C54E1

Accessibility & contrast

On white

12.08

#231C9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#231C9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231C9F

12.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231C9F	#FFFFFF	#000000	##FFFFFF
##231C9F	1.00	12.08	1.74	12.08
#FFFFFF	12.08	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA3

Deuteranopia (green-blind)

#002F9D

Tritanopia (blue-blind)

#00465F

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #231c9f;
/* rgb */ color: rgb(35, 28, 159);
/* oklch */ color: oklch(35.3% 0.197 272.3);

Tailwind

colors: {
  custom: {
    50: '#755cbd',
    500: '#231c9f',
    950: '#000000',
  },
}

SCSS

$custom: #231c9f;
$custom-light: #755cbd;
$custom-dark: #000000;

JSON

{
  "hex": "#231c9f",
  "rgb": {
    "r": 35,
    "g": 28,
    "b": 159
  },
  "hsl": {
    "h": 243.206,
    "s": 70.053,
    "l": 36.667
  },
  "oklch": {
    "l": 0.35345,
    "c": 0.19667,
    "h": 272.3
  },
  "luminance": 0.03691
}

Semantic roles & 50–950 ramp

primary

#231C9F

secondary

#BEC453

accent

#ED3BE3

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #231C9F

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

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