#231B62#231B62

#231B62 is a dark, moderate blue. Relative luminance 0.020; OKLCH L 28.4% C 0.120 H 280.7°. Best body text is #FFFFFF at 14.95:1 contrast (WCAG AA passes).

Color values

HEX	#231B62
RGB	rgb(35, 27, 98)
HSL	hsl(247, 57%, 25%)
HSV	hsv(247, 72%, 38%)
CMYK	cmyk(64.3%, 72.4%, 0%, 61.6%)
CIE-LAB	lab(15.61, 26.70, -40.78)
CIE-LCH	lch(15.61, 48.74, 303.21°)
OKLab	oklab(28.38% 0.0221 -0.1175)
OKLCH	oklch(28.38% 0.12 280.7)
XYZ	xyz(3.2890, 2.0228, 11.7700)
Luminance	0.0202 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B62 #5A621B

analogous

#1B3662 #231B62 #471B62

triadic

#231B62 #62231B #1B6223

tetradic

#231B62 #621B36 #5A621B #1B6247

square

#231B62 #621B36 #5A621B #1B6247

split-complementary

#231B62 #62471B #36621B

monochromatic

#090718 #120E32 #231B62 #342892 #4535C2

Accessibility & contrast

On white

14.95

#231B62 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#231B62 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B62

14.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B62	#FFFFFF	#000000	##FFFFFF
##231B62	1.00	14.95	1.40	14.95
#FFFFFF	14.95	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	14.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002964

Deuteranopia (green-blind)

#002461

Tritanopia (blue-blind)

#002E3C

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #231b62;
/* rgb */ color: rgb(35, 27, 98);
/* oklch */ color: oklch(28.4% 0.120 280.7);

Tailwind

colors: {
  custom: {
    50: '#66588f',
    500: '#231b62',
    950: '#000000',
  },
}

SCSS

$custom: #231b62;
$custom-light: #66588f;
$custom-dark: #000000;

JSON

{
  "hex": "#231b62",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 98
  },
  "hsl": {
    "h": 246.761,
    "s": 56.8,
    "l": 24.51
  },
  "oklch": {
    "l": 0.28384,
    "c": 0.11956,
    "h": 280.7
  },
  "luminance": 0.02023
}

Semantic roles & 50–950 ramp

primary

#231B62

secondary

#8E9841

accent

#E048CF

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030C

muted

#7A787D

Preview Lab

Preview with #231B62

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

Preview Lab → · Contrast checker → · Palette generator →