#231CA0#231CA0

#231CA0 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.5% C 0.198 H 272.2°. Best body text is #FFFFFF at 12.03:1 contrast (WCAG AA passes).

Color values

HEX	#231CA0
RGB	rgb(35, 28, 160)
HSL	hsl(243, 70%, 37%)
HSV	hsv(243, 83%, 63%)
CMYK	cmyk(78.1%, 82.5%, 0%, 37.3%)
CIE-LAB	lab(22.74, 47.01, -68.33)
CIE-LCH	lch(22.74, 82.94, 304.53°)
OKLab	oklab(35.46% 0.0075 -0.1977)
OKLCH	oklch(35.46% 0.198 272.2)
XYZ	xyz(7.4514, 3.7251, 33.5772)
Luminance	0.0373 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231CA0 #99A01C

analogous

#1C57A0 #231CA0 #651CA0

triadic

#231CA0 #A0231C #1CA023

tetradic

#231CA0 #A01C57 #99A01C #1CA065

square

#231CA0 #A01C57 #99A01C #1CA065

split-complementary

#231CA0 #A0651C #57A01C

monochromatic

#0C0A38 #18136C #231CA0 #2E25D4 #5D55E1

Accessibility & contrast

On white

12.03

#231CA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#231CA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231CA0

12.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231CA0	#FFFFFF	#000000	##FFFFFF
##231CA0	1.00	12.03	1.75	12.03
#FFFFFF	12.03	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003DA4

Deuteranopia (green-blind)

#00309E

Tritanopia (blue-blind)

#00465F

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #231ca0;
/* rgb */ color: rgb(35, 28, 160);
/* oklch */ color: oklch(35.5% 0.198 272.2);

Tailwind

colors: {
  custom: {
    50: '#755cbe',
    500: '#231ca0',
    950: '#000000',
  },
}

SCSS

$custom: #231ca0;
$custom-light: #755cbe;
$custom-dark: #000000;

JSON

{
  "hex": "#231ca0",
  "rgb": {
    "r": 35,
    "g": 28,
    "b": 160
  },
  "hsl": {
    "h": 243.182,
    "s": 70.213,
    "l": 36.863
  },
  "oklch": {
    "l": 0.35464,
    "c": 0.19785,
    "h": 272.2
  },
  "luminance": 0.03726
}

Semantic roles & 50–950 ramp

primary

#231CA0

secondary

#BEC453

accent

#ED3BE4

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #231CA0

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

Preview Lab → · Contrast checker → · Palette generator →