#231B6E#231B6E

#231B6E is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.6% C 0.136 H 278.4°. Best body text is #FFFFFF at 14.45:1 contrast (WCAG AA passes).

Color values

HEX	#231B6E
RGB	rgb(35, 27, 110)
HSL	hsl(246, 61%, 27%)
HSV	hsv(246, 75%, 43%)
CMYK	cmyk(68.2%, 75.5%, 0%, 56.9%)
CIE-LAB	lab(16.83, 30.93, -46.65)
CIE-LCH	lch(16.83, 55.97, 303.55°)
OKLab	oklab(29.63% 0.0199 -0.1347)
OKLCH	oklch(29.63% 0.136 278.4)
XYZ	xyz(3.8986, 2.2667, 14.9809)
Luminance	0.0227 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B6E #666E1B

analogous

#1B3D6E #231B6E #4D1B6E

triadic

#231B6E #6E231B #1B6E23

tetradic

#231B6E #6E1B3D #666E1B #1B6E4D

square

#231B6E #6E1B3D #666E1B #1B6E4D

split-complementary

#231B6E #6E4D1B #3D6E1B

monochromatic

#080619 #130F3D #231B6E #33279F #4436CE

Accessibility & contrast

On white

14.45

#231B6E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#231B6E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B6E

14.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B6E	#FFFFFF	#000000	##FFFFFF
##231B6E	1.00	14.45	1.45	14.45
#FFFFFF	14.45	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D70

Deuteranopia (green-blind)

#00266C

Tritanopia (blue-blind)

#003242

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #231b6e;
/* rgb */ color: rgb(35, 27, 110);
/* oklch */ color: oklch(29.6% 0.136 278.4);

Tailwind

colors: {
  custom: {
    50: '#695898',
    500: '#231b6e',
    950: '#000000',
  },
}

SCSS

$custom: #231b6e;
$custom-light: #695898;
$custom-dark: #000000;

JSON

{
  "hex": "#231b6e",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 110
  },
  "hsl": {
    "h": 245.783,
    "s": 60.584,
    "l": 26.863
  },
  "oklch": {
    "l": 0.29632,
    "c": 0.13612,
    "h": 278.4
  },
  "luminance": 0.02267
}

Semantic roles & 50–950 ramp

primary

#231B6E

secondary

#9AA342

accent

#E444D4

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #231B6E

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

Preview Lab → · Contrast checker → · Palette generator →