#231C9E#231C9E

#231C9E is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.2% C 0.195 H 272.3°. Best body text is #FFFFFF at 12.13:1 contrast (WCAG AA passes).

Color values

HEX	#231C9E
RGB	rgb(35, 28, 158)
HSL	hsl(243, 70%, 36%)
HSV	hsv(243, 82%, 62%)
CMYK	cmyk(77.8%, 82.3%, 0%, 38%)
CIE-LAB	lab(22.50, 46.38, -67.51)
CIE-LCH	lch(22.50, 81.90, 304.49°)
OKLab	oklab(35.23% 0.008 -0.1953)
OKLCH	oklch(35.23% 0.195 272.3)
XYZ	xyz(7.2779, 3.6557, 32.6632)
Luminance	0.0366 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231C9E #979E1C

analogous

#1C569E #231C9E #641C9E

triadic

#231C9E #9E231C #1C9E23

tetradic

#231C9E #9E1C56 #979E1C #1C9E64

square

#231C9E #9E1C56 #979E1C #1C9E64

split-complementary

#231C9E #9E641C #569E1C

monochromatic

#0C0A36 #17136A #231C9E #2F25D2 #5B54E1

Accessibility & contrast

On white

12.13

#231C9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#231C9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231C9E

12.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231C9E	#FFFFFF	#000000	##FFFFFF
##231C9E	1.00	12.13	1.73	12.13
#FFFFFF	12.13	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA2

Deuteranopia (green-blind)

#002F9C

Tritanopia (blue-blind)

#00455E

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #231c9e;
/* rgb */ color: rgb(35, 28, 158);
/* oklch */ color: oklch(35.2% 0.195 272.3);

Tailwind

colors: {
  custom: {
    50: '#755cbc',
    500: '#231c9e',
    950: '#000000',
  },
}

SCSS

$custom: #231c9e;
$custom-light: #755cbc;
$custom-dark: #000000;

JSON

{
  "hex": "#231c9e",
  "rgb": {
    "r": 35,
    "g": 28,
    "b": 158
  },
  "hsl": {
    "h": 243.231,
    "s": 69.892,
    "l": 36.471
  },
  "oklch": {
    "l": 0.35227,
    "c": 0.19549,
    "h": 272.3
  },
  "luminance": 0.03656
}

Semantic roles & 50–950 ramp

primary

#231C9E

secondary

#BEC452

accent

#ED3BE3

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #231C9E

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

Preview Lab → · Contrast checker → · Palette generator →