#231F8D#231F8D

#231F8D is a dark, vivid blue. Relative luminance 0.033; OKLCH L 33.6% C 0.172 H 273.6°. Best body text is #FFFFFF at 12.71:1 contrast (WCAG AA passes).

Color values

HEX	#231F8D
RGB	rgb(35, 31, 141)
HSL	hsl(242, 64%, 34%)
HSV	hsv(242, 78%, 55%)
CMYK	cmyk(75.2%, 78%, 0%, 44.7%)
CIE-LAB	lab(21.06, 39.24, -59.40)
CIE-LCH	lch(21.06, 71.19, 303.45°)
OKLab	oklab(33.64% 0.0109 -0.1719)
OKLCH	oklch(33.64% 0.172 273.6)
XYZ	xyz(5.9892, 3.2598, 25.5077)
Luminance	0.0326 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F8D #898D1F

analogous

#1F528D #231F8D #5A1F8D

triadic

#231F8D #8D231F #1F8D23

tetradic

#231F8D #8D1F52 #898D1F #1F8D5A

square

#231F8D #8D1F52 #898D1F #1F8D5A

split-complementary

#231F8D #8D5A1F #528D1F

monochromatic

#0A0929 #17145B #231F8D #2F2ABF #534ED8

Accessibility & contrast

On white

12.71

#231F8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#231F8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F8D

12.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F8D	#FFFFFF	#000000	##FFFFFF
##231F8D	1.00	12.71	1.65	12.71
#FFFFFF	12.71	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003890

Deuteranopia (green-blind)

#002D8B

Tritanopia (blue-blind)

#004055

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #231f8d;
/* rgb */ color: rgb(35, 31, 141);
/* oklch */ color: oklch(33.6% 0.172 273.6);

Tailwind

colors: {
  custom: {
    50: '#705db0',
    500: '#231f8d',
    950: '#000000',
  },
}

SCSS

$custom: #231f8d;
$custom-light: #705db0;
$custom-dark: #000000;

JSON

{
  "hex": "#231f8d",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 141
  },
  "hsl": {
    "h": 242.182,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.33637,
    "c": 0.1722,
    "h": 273.6
  },
  "luminance": 0.0326
}

Semantic roles & 50–950 ramp

primary

#231F8D

secondary

#B7BB4D

accent

#E741E1

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090411

muted

#7B7980

Preview Lab

Preview with #231F8D

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

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