#252D8B#252D8B

#252D8B is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.8% C 0.154 H 272.1°. Best body text is #FFFFFF at 11.50:1 contrast (WCAG AA passes).

Color values

HEX	#252D8B
RGB	rgb(37, 45, 139)
HSL	hsl(235, 58%, 35%)
HSV	hsv(235, 73%, 55%)
CMYK	cmyk(73.4%, 67.6%, 0%, 45.5%)
CIE-LAB	lab(24.11, 30.11, -53.13)
CIE-LCH	lch(24.11, 61.07, 299.54°)
OKLab	oklab(35.8% 0.0056 -0.1535)
OKLCH	oklch(35.8% 0.154 272.1)
XYZ	xyz(6.3600, 4.1335, 24.8838)
Luminance	0.0413 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#252D8B #8B8325

analogous

#25608B #252D8B #50258B

triadic

#252D8B #8B252D #2D8B25

tetradic

#252D8B #8B2560 #8B8325 #258B50

square

#252D8B #8B2560 #8B8325 #258B50

split-complementary

#252D8B #8B5025 #608B25

monochromatic

#0B0E2A #181D5B #252D8B #323DBB #5862D3

Accessibility & contrast

On white

11.50

#252D8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#252D8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #252D8B

11.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##252D8B	#FFFFFF	#000000	##FFFFFF
##252D8B	1.00	11.50	1.83	11.50
#FFFFFF	11.50	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8E

Deuteranopia (green-blind)

#003589

Tritanopia (blue-blind)

#004658

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #252d8b;
/* rgb */ color: rgb(37, 45, 139);
/* oklch */ color: oklch(35.8% 0.154 272.1);

Tailwind

colors: {
  custom: {
    50: '#6f66ae',
    500: '#252d8b',
    950: '#000000',
  },
}

SCSS

$custom: #252d8b;
$custom-light: #6f66ae;
$custom-dark: #000000;

JSON

{
  "hex": "#252d8b",
  "rgb": {
    "r": 37,
    "g": 45,
    "b": 139
  },
  "hsl": {
    "h": 235.294,
    "s": 57.955,
    "l": 34.51
  },
  "oklch": {
    "l": 0.35798,
    "c": 0.15364,
    "h": 272.1
  },
  "luminance": 0.04134
}

Semantic roles & 50–950 ramp

primary

#252D8B

secondary

#B7AF55

accent

#D547E1

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #252D8B

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

Preview Lab → · Contrast checker → · Palette generator →