#231B86#231B86

#231B86 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.3% C 0.167 H 274.9°. Best body text is #FFFFFF at 13.36:1 contrast (WCAG AA passes).

Color values

HEX	#231B86
RGB	rgb(35, 27, 134)
HSL	hsl(244, 66%, 32%)
HSV	hsv(244, 80%, 53%)
CMYK	cmyk(73.9%, 79.9%, 0%, 47.5%)
CIE-LAB	lab(19.48, 39.12, -57.62)
CIE-LCH	lch(19.48, 69.64, 304.17°)
OKLab	oklab(32.3% 0.0143 -0.1666)
OKLCH	oklch(32.3% 0.167 274.9)
XYZ	xyz(5.3867, 2.8619, 22.8181)
Luminance	0.0286 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B86 #7E861B

analogous

#1B4986 #231B86 #591B86

triadic

#231B86 #86231B #1B8623

tetradic

#231B86 #861B49 #7E861B #1B8659

square

#231B86 #861B49 #7E861B #1B8659

split-complementary

#231B86 #86591B #49861B

monochromatic

#080620 #161153 #231B86 #3025B9 #4E42D9

Accessibility & contrast

On white

13.36

#231B86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#231B86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B86

13.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B86	#FFFFFF	#000000	##FFFFFF
##231B86	1.00	13.36	1.57	13.36
#FFFFFF	13.36	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003489

Deuteranopia (green-blind)

#002A84

Tritanopia (blue-blind)

#003B50

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #231b86;
/* rgb */ color: rgb(35, 27, 134);
/* oklch */ color: oklch(32.3% 0.167 274.9);

Tailwind

colors: {
  custom: {
    50: '#6f5aaa',
    500: '#231b86',
    950: '#000000',
  },
}

SCSS

$custom: #231b86;
$custom-light: #6f5aaa;
$custom-dark: #000000;

JSON

{
  "hex": "#231b86",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 134
  },
  "hsl": {
    "h": 244.486,
    "s": 66.46,
    "l": 31.569
  },
  "oklch": {
    "l": 0.32296,
    "c": 0.16724,
    "h": 274.9
  },
  "luminance": 0.02862
}

Semantic roles & 50–950 ramp

primary

#231B86

secondary

#B0B944

accent

#E93EDD

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #231B86

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

Preview Lab → · Contrast checker → · Palette generator →