#231C9D#231C9D

#231C9D is a dark, vivid blue. Relative luminance 0.036; OKLCH L 35.1% C 0.194 H 272.4°. Best body text is #FFFFFF at 12.18:1 contrast (WCAG AA passes).

Color values

HEX	#231C9D
RGB	rgb(35, 28, 157)
HSL	hsl(243, 70%, 36%)
HSV	hsv(243, 82%, 62%)
CMYK	cmyk(77.7%, 82.2%, 0%, 38.4%)
CIE-LAB	lab(22.38, 46.06, -67.10)
CIE-LCH	lch(22.38, 81.38, 304.47°)
OKLab	oklab(35.11% 0.0082 -0.1941)
OKLCH	oklch(35.11% 0.194 272.4)
XYZ	xyz(7.1922, 3.6214, 32.2117)
Luminance	0.0362 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231C9D #969D1C

analogous

#1C569D #231C9D #641C9D

triadic

#231C9D #9D231C #1C9D23

tetradic

#231C9D #9D1C56 #969D1C #1C9D64

square

#231C9D #9D1C56 #969D1C #1C9D64

split-complementary

#231C9D #9D641C #569D1C

monochromatic

#0C0935 #171369 #231C9D #2F25D1 #5B53E0

Accessibility & contrast

On white

12.18

#231C9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#231C9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231C9D

12.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231C9D	#FFFFFF	#000000	##FFFFFF
##231C9D	1.00	12.18	1.72	12.18
#FFFFFF	12.18	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA1

Deuteranopia (green-blind)

#002F9B

Tritanopia (blue-blind)

#00455D

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #231c9d;
/* rgb */ color: rgb(35, 28, 157);
/* oklch */ color: oklch(35.1% 0.194 272.4);

Tailwind

colors: {
  custom: {
    50: '#755cbb',
    500: '#231c9d',
    950: '#000000',
  },
}

SCSS

$custom: #231c9d;
$custom-light: #755cbb;
$custom-dark: #000000;

JSON

{
  "hex": "#231c9d",
  "rgb": {
    "r": 35,
    "g": 28,
    "b": 157
  },
  "hsl": {
    "h": 243.256,
    "s": 69.73,
    "l": 36.275
  },
  "oklch": {
    "l": 0.35108,
    "c": 0.19431,
    "h": 272.4
  },
  "luminance": 0.03622
}

Semantic roles & 50–950 ramp

primary

#231C9D

secondary

#BDC351

accent

#ED3BE3

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #231C9D

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

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