#231F7D#231F7D

#231F7D is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.9% C 0.152 H 275.4°. Best body text is #FFFFFF at 13.43:1 contrast (WCAG AA passes).

Color values

HEX	#231F7D
RGB	rgb(35, 31, 125)
HSL	hsl(243, 60%, 31%)
HSV	hsv(243, 75%, 49%)
CMYK	cmyk(72%, 75.2%, 0%, 51%)
CIE-LAB	lab(19.30, 33.74, -52.23)
CIE-LCH	lch(19.30, 62.18, 302.86°)
OKLab	oklab(31.87% 0.0142 -0.151)
OKLCH	oklch(31.87% 0.152 275.4)
XYZ	xyz(4.8836, 2.8175, 19.6845)
Luminance	0.0282 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F7D #797D1F

analogous

#1F4A7D #231F7D #521F7D

triadic

#231F7D #7D231F #1F7D23

tetradic

#231F7D #7D1F4A #797D1F #1F7D52

square

#231F7D #7D1F4A #797D1F #1F7D52

split-complementary

#231F7D #7D521F #4A7D1F

monochromatic

#08071B #15134C #231F7D #312BAE #4B45D1

Accessibility & contrast

On white

13.43

#231F7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#231F7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F7D

13.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F7D	#FFFFFF	#000000	##FFFFFF
##231F7D	1.00	13.43	1.56	13.43
#FFFFFF	13.43	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003380

Deuteranopia (green-blind)

#002A7B

Tritanopia (blue-blind)

#003A4C

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #231f7d;
/* rgb */ color: rgb(35, 31, 125);
/* oklch */ color: oklch(31.9% 0.152 275.4);

Tailwind

colors: {
  custom: {
    50: '#6c5ca4',
    500: '#231f7d',
    950: '#000000',
  },
}

SCSS

$custom: #231f7d;
$custom-light: #6c5ca4;
$custom-dark: #000000;

JSON

{
  "hex": "#231f7d",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 125
  },
  "hsl": {
    "h": 242.553,
    "s": 60.256,
    "l": 30.588
  },
  "oklch": {
    "l": 0.31869,
    "c": 0.15164,
    "h": 275.4
  },
  "luminance": 0.02818
}

Semantic roles & 50–950 ramp

primary

#231F7D

secondary

#ACB048

accent

#E344DD

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #231F7D

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

Preview Lab → · Contrast checker → · Palette generator →