#233181#233181

#233181 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.5% C 0.135 H 270.3°. Best body text is #FFFFFF at 11.49:1 contrast (WCAG AA passes).

Color values

HEX	#233181
RGB	rgb(35, 49, 129)
HSL	hsl(231, 57%, 32%)
HSV	hsv(231, 73%, 51%)
CMYK	cmyk(72.9%, 62%, 0%, 49.4%)
CIE-LAB	lab(24.12, 23.36, -46.85)
CIE-LCH	lch(24.12, 52.35, 296.50°)
OKLab	oklab(35.5% 0.0008 -0.1352)
OKLCH	oklch(35.5% 0.135 270.3)
XYZ	xyz(5.7525, 4.1384, 21.2602)
Luminance	0.0414 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233181 #817323

analogous

#236081 #233181 #442381

triadic

#233181 #812331 #318123

tetradic

#233181 #812360 #817323 #238144

square

#233181 #812360 #817323 #238144

split-complementary

#233181 #814423 #608123

monochromatic

#090C21 #161F51 #233181 #3043B1 #4F62CF

Accessibility & contrast

On white

11.49

#233181 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#233181 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233181

11.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233181	#FFFFFF	#000000	##FFFFFF
##233181	1.00	11.49	1.83	11.49
#FFFFFF	11.49	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E84

Deuteranopia (green-blind)

#00357F

Tritanopia (blue-blind)

#004554

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #233181;
/* rgb */ color: rgb(35, 49, 129);
/* oklch */ color: oklch(35.5% 0.135 270.3);

Tailwind

colors: {
  custom: {
    50: '#6c69a6',
    500: '#233181',
    950: '#000000',
  },
}

SCSS

$custom: #233181;
$custom-light: #6c69a6;
$custom-dark: #000000;

JSON

{
  "hex": "#233181",
  "rgb": {
    "r": 35,
    "g": 49,
    "b": 129
  },
  "hsl": {
    "h": 231.064,
    "s": 57.317,
    "l": 32.157
  },
  "oklch": {
    "l": 0.35499,
    "c": 0.13516,
    "h": 270.3
  },
  "luminance": 0.04139
}

Semantic roles & 50–950 ramp

primary

#233181

secondary

#B3A44D

accent

#CA47E1

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#08060F

muted

#7A7A7F

Preview Lab

Preview with #233181

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

Preview Lab → · Contrast checker → · Palette generator →