#231B7F#231B7F

#231B7F is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.5% C 0.158 H 275.8°. Best body text is #FFFFFF at 13.68:1 contrast (WCAG AA passes).

Color values

HEX	#231B7F
RGB	rgb(35, 27, 127)
HSL	hsl(245, 65%, 30%)
HSV	hsv(245, 79%, 50%)
CMYK	cmyk(72.4%, 78.7%, 0%, 50.2%)
CIE-LAB	lab(18.68, 36.78, -54.51)
CIE-LCH	lch(18.68, 65.76, 304.00°)
OKLab	oklab(31.5% 0.016 -0.1576)
OKLCH	oklch(31.5% 0.158 275.8)
XYZ	xyz(4.9146, 2.6730, 20.3315)
Luminance	0.0267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B7F #777F1B

analogous

#1B457F #231B7F #551B7F

triadic

#231B7F #7F231B #1B7F23

tetradic

#231B7F #7F1B45 #777F1B #1B7F55

square

#231B7F #7F1B45 #777F1B #1B7F55

split-complementary

#231B7F #7F551B #457F1B

monochromatic

#07061A #15104D #231B7F #3126B1 #4A3ED6

Accessibility & contrast

On white

13.68

#231B7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#231B7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B7F

13.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B7F	#FFFFFF	#000000	##FFFFFF
##231B7F	1.00	13.68	1.53	13.68
#FFFFFF	13.68	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003282

Deuteranopia (green-blind)

#00297D

Tritanopia (blue-blind)

#00384C

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #231b7f;
/* rgb */ color: rgb(35, 27, 127);
/* oklch */ color: oklch(31.5% 0.158 275.8);

Tailwind

colors: {
  custom: {
    50: '#6d59a5',
    500: '#231b7f',
    950: '#000000',
  },
}

SCSS

$custom: #231b7f;
$custom-light: #6d59a5;
$custom-dark: #000000;

JSON

{
  "hex": "#231b7f",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 127
  },
  "hsl": {
    "h": 244.8,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.315,
    "c": 0.15841,
    "h": 275.8
  },
  "luminance": 0.02673
}

Semantic roles & 50–950 ramp

primary

#231B7F

secondary

#AAB343

accent

#E840DA

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #231B7F

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

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