#231F87#231F87

#231F87 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.0% C 0.165 H 274.2°. Best body text is #FFFFFF at 12.98:1 contrast (WCAG AA passes).

Color values

HEX	#231F87
RGB	rgb(35, 31, 135)
HSL	hsl(242, 63%, 33%)
HSV	hsv(242, 77%, 53%)
CMYK	cmyk(74.1%, 77%, 0%, 47.1%)
CIE-LAB	lab(20.39, 37.20, -56.76)
CIE-LCH	lch(20.39, 67.86, 303.24°)
OKLab	oklab(32.97% 0.0121 -0.1642)
OKLCH	oklch(32.97% 0.165 274.2)
XYZ	xyz(5.5548, 3.0860, 23.2199)
Luminance	0.0309 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F87 #83871F

analogous

#1F4F87 #231F87 #571F87

triadic

#231F87 #87231F #1F8723

tetradic

#231F87 #871F4F #83871F #1F8757

square

#231F87 #871F4F #83871F #1F8757

split-complementary

#231F87 #87571F #4F871F

monochromatic

#090823 #161455 #231F87 #302AB9 #504BD6

Accessibility & contrast

On white

12.98

#231F87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#231F87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F87

12.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F87	#FFFFFF	#000000	##FFFFFF
##231F87	1.00	12.98	1.62	12.98
#FFFFFF	12.98	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368A

Deuteranopia (green-blind)

#002C85

Tritanopia (blue-blind)

#003D51

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #231f87;
/* rgb */ color: rgb(35, 31, 135);
/* oklch */ color: oklch(33.0% 0.165 274.2);

Tailwind

colors: {
  custom: {
    50: '#6f5cab',
    500: '#231f87',
    950: '#000000',
  },
}

SCSS

$custom: #231f87;
$custom-light: #6f5cab;
$custom-dark: #000000;

JSON

{
  "hex": "#231f87",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 135
  },
  "hsl": {
    "h": 242.308,
    "s": 62.651,
    "l": 32.549
  },
  "oklch": {
    "l": 0.32966,
    "c": 0.16461,
    "h": 274.2
  },
  "luminance": 0.03087
}

Semantic roles & 50–950 ramp

primary

#231F87

secondary

#B4B84A

accent

#E642DF

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #231F87

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

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