#252F8B#252F8B

#252F8B is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.2% C 0.151 H 271.6°. Best body text is #FFFFFF at 11.30:1 contrast (WCAG AA passes).

Color values

HEX	#252F8B
RGB	rgb(37, 47, 139)
HSL	hsl(234, 58%, 35%)
HSV	hsv(234, 73%, 55%)
CMYK	cmyk(73.4%, 66.2%, 0%, 45.5%)
CIE-LAB	lab(24.61, 28.79, -52.31)
CIE-LCH	lch(24.61, 59.71, 298.83°)
OKLab	oklab(36.16% 0.0042 -0.1511)
OKLCH	oklch(36.16% 0.151 271.6)
XYZ	xyz(6.4381, 4.2898, 24.9098)
Luminance	0.0429 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#252F8B #8B8125

analogous

#25628B #252F8B #4E258B

triadic

#252F8B #8B252F #2F8B25

tetradic

#252F8B #8B2562 #8B8125 #258B4E

square

#252F8B #8B2562 #8B8125 #258B4E

split-complementary

#252F8B #8B4E25 #628B25

monochromatic

#0B0E2A #181F5B #252F8B #323FBB #5864D3

Accessibility & contrast

On white

11.30

#252F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#252F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #252F8B

11.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##252F8B	#FFFFFF	#000000	##FFFFFF
##252F8B	1.00	11.30	1.86	11.30
#FFFFFF	11.30	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8E

Deuteranopia (green-blind)

#003689

Tritanopia (blue-blind)

#004758

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #252f8b;
/* rgb */ color: rgb(37, 47, 139);
/* oklch */ color: oklch(36.2% 0.151 271.6);

Tailwind

colors: {
  custom: {
    50: '#6f67ae',
    500: '#252f8b',
    950: '#000000',
  },
}

SCSS

$custom: #252f8b;
$custom-light: #6f67ae;
$custom-dark: #000000;

JSON

{
  "hex": "#252f8b",
  "rgb": {
    "r": 37,
    "g": 47,
    "b": 139
  },
  "hsl": {
    "h": 234.118,
    "s": 57.955,
    "l": 34.51
  },
  "oklch": {
    "l": 0.36163,
    "c": 0.1512,
    "h": 271.6
  },
  "luminance": 0.0429
}

Semantic roles & 50–950 ramp

primary

#252F8B

secondary

#B7AD55

accent

#D247E1

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #252F8B

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

Preview Lab → · Contrast checker → · Palette generator →