#231C8F#231C8F

#231C8F is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.5% C 0.177 H 273.8°. Best body text is #FFFFFF at 12.85:1 contrast (WCAG AA passes).

Color values

HEX	#231C8F
RGB	rgb(35, 28, 143)
HSL	hsl(244, 67%, 34%)
HSV	hsv(244, 80%, 56%)
CMYK	cmyk(75.5%, 80.4%, 0%, 43.9%)
CIE-LAB	lab(20.71, 41.55, -61.21)
CIE-LCH	lch(20.71, 73.98, 304.17°)
OKLab	oklab(33.47% 0.0117 -0.1771)
OKLCH	oklch(33.47% 0.177 273.8)
XYZ	xyz(6.0647, 3.1704, 26.2736)
Luminance	0.0317 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231C8F #888F1C

analogous

#1C4E8F #231C8F #5C1C8F

triadic

#231C8F #8F231C #1C8F23

tetradic

#231C8F #8F1C4E #888F1C #1C8F5C

square

#231C8F #8F1C4E #888F1C #1C8F5C

split-complementary

#231C8F #8F5C1C #4E8F1C

monochromatic

#0A0829 #16125C #231C8F #3026C2 #534ADC

Accessibility & contrast

On white

12.85

#231C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#231C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231C8F

12.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231C8F	#FFFFFF	#000000	##FFFFFF
##231C8F	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)

#003792

Deuteranopia (green-blind)

#002C8D

Tritanopia (blue-blind)

#003F55

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #231c8f;
/* rgb */ color: rgb(35, 28, 143);
/* oklch */ color: oklch(33.5% 0.177 273.8);

Tailwind

colors: {
  custom: {
    50: '#715bb1',
    500: '#231c8f',
    950: '#000000',
  },
}

SCSS

$custom: #231c8f;
$custom-light: #715bb1;
$custom-dark: #000000;

JSON

{
  "hex": "#231c8f",
  "rgb": {
    "r": 35,
    "g": 28,
    "b": 143
  },
  "hsl": {
    "h": 243.652,
    "s": 67.251,
    "l": 33.529
  },
  "oklch": {
    "l": 0.33465,
    "c": 0.17747,
    "h": 273.8
  },
  "luminance": 0.03171
}

Semantic roles & 50–950 ramp

primary

#231C8F

secondary

#B7BE49

accent

#EA3EE0

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #231C8F

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

Preview Lab → · Contrast checker → · Palette generator →