#231B67#231B67

#231B67 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.9% C 0.127 H 279.7°. Best body text is #FFFFFF at 14.75:1 contrast (WCAG AA passes).

Color values

HEX	#231B67
RGB	rgb(35, 27, 103)
HSL	hsl(246, 58%, 25%)
HSV	hsv(246, 74%, 40%)
CMYK	cmyk(66%, 73.8%, 0%, 59.6%)
CIE-LAB	lab(16.11, 28.47, -43.26)
CIE-LCH	lch(16.11, 51.79, 303.35°)
OKLab	oklab(28.9% 0.0213 -0.1247)
OKLCH	oklch(28.9% 0.127 279.7)
XYZ	xyz(3.5325, 2.1202, 13.0524)
Luminance	0.0212 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B67 #5F671B

analogous

#1B3967 #231B67 #491B67

triadic

#231B67 #67231B #1B6723

tetradic

#231B67 #671B39 #5F671B #1B6749

square

#231B67 #671B39 #5F671B #1B6749

split-complementary

#231B67 #67491B #39671B

monochromatic

#080618 #130E37 #231B67 #332897 #4434C8

Accessibility & contrast

On white

14.75

#231B67 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#231B67 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B67

14.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B67	#FFFFFF	#000000	##FFFFFF
##231B67	1.00	14.75	1.42	14.75
#FFFFFF	14.75	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B69

Deuteranopia (green-blind)

#002566

Tritanopia (blue-blind)

#002F3E

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #231b67;
/* rgb */ color: rgb(35, 27, 103);
/* oklch */ color: oklch(28.9% 0.127 279.7);

Tailwind

colors: {
  custom: {
    50: '#685893',
    500: '#231b67',
    950: '#000000',
  },
}

SCSS

$custom: #231b67;
$custom-light: #685893;
$custom-dark: #000000;

JSON

{
  "hex": "#231b67",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 103
  },
  "hsl": {
    "h": 246.316,
    "s": 58.462,
    "l": 25.49
  },
  "oklch": {
    "l": 0.28896,
    "c": 0.12655,
    "h": 279.7
  },
  "luminance": 0.0212
}

Semantic roles & 50–950 ramp

primary

#231B67

secondary

#939C42

accent

#E246D1

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#07030D

muted

#7A787E

Preview Lab

Preview with #231B67

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

Preview Lab → · Contrast checker → · Palette generator →