#231E8B#231E8B

#231E8B is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.3% C 0.171 H 273.9°. Best body text is #FFFFFF at 12.88:1 contrast (WCAG AA passes).

Color values

HEX	#231E8B
RGB	rgb(35, 30, 139)
HSL	hsl(243, 64%, 33%)
HSV	hsv(243, 78%, 55%)
CMYK	cmyk(74.8%, 78.4%, 0%, 45.5%)
CIE-LAB	lab(20.63, 39.13, -58.85)
CIE-LCH	lch(20.63, 70.68, 303.62°)
OKLab	oklab(33.27% 0.0118 -0.1703)
OKLCH	oklch(33.27% 0.171 273.9)
XYZ	xyz(5.8161, 3.1494, 24.7225)
Luminance	0.0315 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231E8B #868B1E

analogous

#1E4F8B #231E8B #591E8B

triadic

#231E8B #8B231E #1E8B23

tetradic

#231E8B #8B1E4F #868B1E #1E8B59

square

#231E8B #8B1E4F #868B1E #1E8B59

split-complementary

#231E8B #8B591E #4F8B1E

monochromatic

#0A0826 #161359 #231E8B #3029BD #524BD8

Accessibility & contrast

On white

12.88

#231E8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#231E8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231E8B

12.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231E8B	#FFFFFF	#000000	##FFFFFF
##231E8B	1.00	12.88	1.63	12.88
#FFFFFF	12.88	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378E

Deuteranopia (green-blind)

#002C89

Tritanopia (blue-blind)

#003E53

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #231e8b;
/* rgb */ color: rgb(35, 30, 139);
/* oklch */ color: oklch(33.3% 0.171 273.9);

Tailwind

colors: {
  custom: {
    50: '#705cae',
    500: '#231e8b',
    950: '#000000',
  },
}

SCSS

$custom: #231e8b;
$custom-light: #705cae;
$custom-dark: #000000;

JSON

{
  "hex": "#231e8b",
  "rgb": {
    "r": 35,
    "g": 30,
    "b": 139
  },
  "hsl": {
    "h": 242.752,
    "s": 64.497,
    "l": 33.137
  },
  "oklch": {
    "l": 0.33273,
    "c": 0.17065,
    "h": 273.9
  },
  "luminance": 0.0315
}

Semantic roles & 50–950 ramp

primary

#231E8B

secondary

#B5BB4A

accent

#E740E0

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090410

muted

#7B797F

Preview Lab

Preview with #231E8B

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

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