#231D9C#231D9C

#231D9C is a dark, vivid blue. Relative luminance 0.036; OKLCH L 35.1% C 0.192 H 272.4°. Best body text is #FFFFFF at 12.16:1 contrast (WCAG AA passes).

Color values

HEX	#231D9C
RGB	rgb(35, 29, 156)
HSL	hsl(243, 69%, 36%)
HSV	hsv(243, 81%, 61%)
CMYK	cmyk(77.6%, 81.4%, 0%, 38.8%)
CIE-LAB	lab(22.43, 45.25, -66.40)
CIE-LCH	lch(22.43, 80.35, 304.27°)
OKLab	oklab(35.11% 0.0082 -0.1921)
OKLCH	oklch(35.11% 0.192 272.4)
XYZ	xyz(7.1312, 3.6356, 31.7719)
Luminance	0.0364 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D9C #969C1D

analogous

#1D579C #231D9C #631D9C

triadic

#231D9C #9C231D #1D9C23

tetradic

#231D9C #9C1D57 #969C1D #1D9C63

square

#231D9C #9C1D57 #969C1D #1D9C63

split-complementary

#231D9C #9C631D #579C1D

monochromatic

#0C0A35 #171368 #231D9C #2F27D0 #5B54DF

Accessibility & contrast

On white

12.16

#231D9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#231D9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D9C

12.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D9C	#FFFFFF	#000000	##FFFFFF
##231D9C	1.00	12.16	1.73	12.16
#FFFFFF	12.16	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C9F

Deuteranopia (green-blind)

#002F9A

Tritanopia (blue-blind)

#00455D

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #231d9c;
/* rgb */ color: rgb(35, 29, 156);
/* oklch */ color: oklch(35.1% 0.192 272.4);

Tailwind

colors: {
  custom: {
    50: '#745cbb',
    500: '#231d9c',
    950: '#000000',
  },
}

SCSS

$custom: #231d9c;
$custom-light: #745cbb;
$custom-dark: #000000;

JSON

{
  "hex": "#231d9c",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 156
  },
  "hsl": {
    "h": 242.835,
    "s": 68.649,
    "l": 36.275
  },
  "oklch": {
    "l": 0.35108,
    "c": 0.19231,
    "h": 272.4
  },
  "luminance": 0.03636
}

Semantic roles & 50–950 ramp

primary

#231D9C

secondary

#BDC252

accent

#EB3CE3

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #231D9C

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

Preview Lab → · Contrast checker → · Palette generator →