#231F7B#231F7B

#231F7B is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.7% C 0.149 H 275.6°. Best body text is #FFFFFF at 13.52:1 contrast (WCAG AA passes).

Color values

HEX	#231F7B
RGB	rgb(35, 31, 123)
HSL	hsl(243, 60%, 30%)
HSV	hsv(243, 75%, 48%)
CMYK	cmyk(71.5%, 74.8%, 0%, 51.8%)
CIE-LAB	lab(19.09, 33.03, -51.31)
CIE-LCH	lch(19.09, 61.02, 302.78°)
OKLab	oklab(31.65% 0.0146 -0.1483)
OKLCH	oklch(31.65% 0.149 275.6)
XYZ	xyz(4.7571, 2.7669, 19.0184)
Luminance	0.0277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F7B #777B1F

analogous

#1F497B #231F7B #511F7B

triadic

#231F7B #7B231F #1F7B23

tetradic

#231F7B #7B1F49 #777B1F #1F7B51

square

#231F7B #7B1F49 #777B1F #1F7B51

split-complementary

#231F7B #7B511F #497B1F

monochromatic

#070619 #15134A #231F7B #312BAC #4A44D0

Accessibility & contrast

On white

13.52

#231F7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#231F7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F7B

13.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F7B	#FFFFFF	#000000	##FFFFFF
##231F7B	1.00	13.52	1.55	13.52
#FFFFFF	13.52	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00327E

Deuteranopia (green-blind)

#002A79

Tritanopia (blue-blind)

#00394B

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #231f7b;
/* rgb */ color: rgb(35, 31, 123);
/* oklch */ color: oklch(31.7% 0.149 275.6);

Tailwind

colors: {
  custom: {
    50: '#6c5ca2',
    500: '#231f7b',
    950: '#000000',
  },
}

SCSS

$custom: #231f7b;
$custom-light: #6c5ca2;
$custom-dark: #000000;

JSON

{
  "hex": "#231f7b",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 123
  },
  "hsl": {
    "h": 242.609,
    "s": 59.74,
    "l": 30.196
  },
  "oklch": {
    "l": 0.31654,
    "c": 0.14899,
    "h": 275.6
  },
  "luminance": 0.02767
}

Semantic roles & 50–950 ramp

primary

#231F7B

secondary

#AAAE48

accent

#E345DC

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #231F7B

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

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