#231C59#231C59

#231C59 is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.7% C 0.105 H 282.3°. Best body text is #FFFFFF at 15.20:1 contrast (WCAG AA passes).

Color values

HEX	#231C59
RGB	rgb(35, 28, 89)
HSL	hsl(247, 52%, 23%)
HSV	hsv(247, 69%, 35%)
CMYK	cmyk(60.7%, 68.5%, 0%, 65.1%)
CIE-LAB	lab(15.00, 22.81, -35.76)
CIE-LCH	lch(15.00, 42.42, 302.53°)
OKLab	oklab(27.68% 0.0223 -0.1028)
OKLCH	oklch(27.68% 0.105 282.3)
XYZ	xyz(2.9110, 1.9089, 9.6643)
Luminance	0.0191 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231C59 #52591C

analogous

#1C3359 #231C59 #411C59

triadic

#231C59 #59231C #1C5923

tetradic

#231C59 #591C33 #52591C #1C5941

square

#231C59 #591C33 #52591C #1C5941

split-complementary

#231C59 #59411C #33591C

monochromatic

#090717 #110D2A #231C59 #352B88 #4839B6

Accessibility & contrast

On white

15.20

#231C59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#231C59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231C59

15.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231C59	#FFFFFF	#000000	##FFFFFF
##231C59	1.00	15.20	1.38	15.20
#FFFFFF	15.20	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285B

Deuteranopia (green-blind)

#002458

Tritanopia (blue-blind)

#082B37

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #231c59;
/* rgb */ color: rgb(35, 28, 89);
/* oklch */ color: oklch(27.7% 0.105 282.3);

Tailwind

colors: {
  custom: {
    50: '#645888',
    500: '#231c59',
    950: '#000000',
  },
}

SCSS

$custom: #231c59;
$custom-light: #645888;
$custom-dark: #000000;

JSON

{
  "hex": "#231c59",
  "rgb": {
    "r": 35,
    "g": 28,
    "b": 89
  },
  "hsl": {
    "h": 246.885,
    "s": 52.137,
    "l": 22.941
  },
  "oklch": {
    "l": 0.27682,
    "c": 0.10516,
    "h": 282.3
  },
  "luminance": 0.01909
}

Semantic roles & 50–950 ramp

primary

#231C59

secondary

#868F42

accent

#DC4CCB

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030B

muted

#7A787C

Preview Lab

Preview with #231C59

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

Preview Lab → · Contrast checker → · Palette generator →