#231B7E#231B7E

#231B7E is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.4% C 0.157 H 275.9°. Best body text is #FFFFFF at 13.73:1 contrast (WCAG AA passes).

Color values

HEX	#231B7E
RGB	rgb(35, 27, 126)
HSL	hsl(245, 65%, 30%)
HSV	hsv(245, 79%, 49%)
CMYK	cmyk(72.2%, 78.6%, 0%, 50.6%)
CIE-LAB	lab(18.57, 36.44, -54.06)
CIE-LCH	lch(18.57, 65.20, 303.98°)
OKLab	oklab(31.39% 0.0163 -0.1563)
OKLCH	oklch(31.39% 0.157 275.9)
XYZ	xyz(4.8497, 2.6471, 19.9900)
Luminance	0.0265 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B7E #767E1B

analogous

#1B457E #231B7E #541B7E

triadic

#231B7E #7E231B #1B7E23

tetradic

#231B7E #7E1B45 #767E1B #1B7E54

square

#231B7E #7E1B45 #767E1B #1B7E54

split-complementary

#231B7E #7E541B #457E1B

monochromatic

#070519 #15104C #231B7E #3126B0 #4A3ED6

Accessibility & contrast

On white

13.73

#231B7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#231B7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B7E

13.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B7E	#FFFFFF	#000000	##FFFFFF
##231B7E	1.00	13.73	1.53	13.73
#FFFFFF	13.73	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003181

Deuteranopia (green-blind)

#00297C

Tritanopia (blue-blind)

#00384B

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #231b7e;
/* rgb */ color: rgb(35, 27, 126);
/* oklch */ color: oklch(31.4% 0.157 275.9);

Tailwind

colors: {
  custom: {
    50: '#6d59a4',
    500: '#231b7e',
    950: '#000000',
  },
}

SCSS

$custom: #231b7e;
$custom-light: #6d59a4;
$custom-dark: #000000;

JSON

{
  "hex": "#231b7e",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 126
  },
  "hsl": {
    "h": 244.848,
    "s": 64.706,
    "l": 30
  },
  "oklch": {
    "l": 0.31388,
    "c": 0.15713,
    "h": 275.9
  },
  "luminance": 0.02648
}

Semantic roles & 50–950 ramp

primary

#231B7E

secondary

#A9B243

accent

#E840DA

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #231B7E

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

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