#231C9A#231C9A

#231C9A is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.8% C 0.191 H 272.7°. Best body text is #FFFFFF at 12.32:1 contrast (WCAG AA passes).

Color values

HEX	#231C9A
RGB	rgb(35, 28, 154)
HSL	hsl(243, 69%, 36%)
HSV	hsv(243, 82%, 60%)
CMYK	cmyk(77.3%, 81.8%, 0%, 39.6%)
CIE-LAB	lab(22.02, 45.11, -65.85)
CIE-LCH	lch(22.02, 79.82, 304.41°)
OKLab	oklab(34.75% 0.009 -0.1905)
OKLCH	oklch(34.75% 0.191 272.7)
XYZ	xyz(6.9392, 3.5202, 30.8793)
Luminance	0.0352 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231C9A #939A1C

analogous

#1C549A #231C9A #621C9A

triadic

#231C9A #9A231C #1C9A23

tetradic

#231C9A #9A1C54 #939A1C #1C9A62

square

#231C9A #9A1C54 #939A1C #1C9A62

split-complementary

#231C9A #9A621C #549A1C

monochromatic

#0B0932 #171366 #231C9A #2F25CE #5951DF

Accessibility & contrast

On white

12.32

#231C9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#231C9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231C9A

12.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231C9A	#FFFFFF	#000000	##FFFFFF
##231C9A	1.00	12.32	1.70	12.32
#FFFFFF	12.32	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B9D

Deuteranopia (green-blind)

#002E98

Tritanopia (blue-blind)

#00445C

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #231c9a;
/* rgb */ color: rgb(35, 28, 154);
/* oklch */ color: oklch(34.8% 0.191 272.7);

Tailwind

colors: {
  custom: {
    50: '#745cb9',
    500: '#231c9a',
    950: '#000000',
  },
}

SCSS

$custom: #231c9a;
$custom-light: #745cb9;
$custom-dark: #000000;

JSON

{
  "hex": "#231c9a",
  "rgb": {
    "r": 35,
    "g": 28,
    "b": 154
  },
  "hsl": {
    "h": 243.333,
    "s": 69.231,
    "l": 35.686
  },
  "oklch": {
    "l": 0.34753,
    "c": 0.19076,
    "h": 272.7
  },
  "luminance": 0.03521
}

Semantic roles & 50–950 ramp

primary

#231C9A

secondary

#BCC250

accent

#EC3CE2

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #231C9A

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

Preview Lab → · Contrast checker → · Palette generator →