#252B8B#252B8B

#252B8B is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.4% C 0.156 H 272.5°. Best body text is #FFFFFF at 11.69:1 contrast (WCAG AA passes).

Color values

HEX	#252B8B
RGB	rgb(37, 43, 139)
HSL	hsl(236, 58%, 35%)
HSV	hsv(236, 73%, 55%)
CMYK	cmyk(73.4%, 69.1%, 0%, 45.5%)
CIE-LAB	lab(23.62, 31.42, -53.93)
CIE-LCH	lch(23.62, 62.41, 300.23°)
OKLab	oklab(35.44% 0.0069 -0.1559)
OKLCH	oklch(35.44% 0.156 272.5)
XYZ	xyz(6.2855, 3.9845, 24.8589)
Luminance	0.0398 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#252B8B #8B8525

analogous

#255E8B #252B8B #52258B

triadic

#252B8B #8B252B #2B8B25

tetradic

#252B8B #8B255E #8B8525 #258B52

square

#252B8B #8B255E #8B8525 #258B52

split-complementary

#252B8B #8B5225 #5E8B25

monochromatic

#0B0D2A #181C5B #252B8B #323ABB #585FD3

Accessibility & contrast

On white

11.69

#252B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#252B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #252B8B

11.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##252B8B	#FFFFFF	#000000	##FFFFFF
##252B8B	1.00	11.69	1.80	11.69
#FFFFFF	11.69	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D8E

Deuteranopia (green-blind)

#003389

Tritanopia (blue-blind)

#004557

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #252b8b;
/* rgb */ color: rgb(37, 43, 139);
/* oklch */ color: oklch(35.4% 0.156 272.5);

Tailwind

colors: {
  custom: {
    50: '#6f64ae',
    500: '#252b8b',
    950: '#000000',
  },
}

SCSS

$custom: #252b8b;
$custom-light: #6f64ae;
$custom-dark: #000000;

JSON

{
  "hex": "#252b8b",
  "rgb": {
    "r": 37,
    "g": 43,
    "b": 139
  },
  "hsl": {
    "h": 236.471,
    "s": 57.955,
    "l": 34.51
  },
  "oklch": {
    "l": 0.35443,
    "c": 0.15604,
    "h": 272.5
  },
  "luminance": 0.03985
}

Semantic roles & 50–950 ramp

primary

#252B8B

secondary

#B7B155

accent

#D847E1

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080510

muted

#7B7A7F

Preview Lab

Preview with #252B8B

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

Preview Lab → · Contrast checker → · Palette generator →