#252B8F#252B8F

#252B8F is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.8% C 0.161 H 272.3°. Best body text is #FFFFFF at 11.53:1 contrast (WCAG AA passes).

Color values

HEX	#252B8F
RGB	rgb(37, 43, 143)
HSL	hsl(237, 59%, 35%)
HSV	hsv(237, 74%, 56%)
CMYK	cmyk(74.1%, 69.9%, 0%, 43.9%)
CIE-LAB	lab(24.01, 32.88, -55.77)
CIE-LCH	lch(24.01, 64.74, 300.52°)
OKLab	oklab(35.85% 0.0065 -0.1613)
OKLCH	oklch(35.85% 0.161 272.3)
XYZ	xyz(6.5831, 4.1036, 26.4264)
Luminance	0.0410 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#252B8F #8F8925

analogous

#25608F #252B8F #54258F

triadic

#252B8F #8F252B #2B8F25

tetradic

#252B8F #8F2560 #8F8925 #258F54

square

#252B8F #8F2560 #8F8925 #258F54

split-complementary

#252B8F #8F5425 #608F25

monochromatic

#0C0E2E #181C5E #252B8F #323AC0 #5A61D4

Accessibility & contrast

On white

11.53

#252B8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#252B8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #252B8F

11.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##252B8F	#FFFFFF	#000000	##FFFFFF
##252B8F	1.00	11.53	1.82	11.53
#FFFFFF	11.53	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E92

Deuteranopia (green-blind)

#00348D

Tritanopia (blue-blind)

#004659

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #252b8f;
/* rgb */ color: rgb(37, 43, 143);
/* oklch */ color: oklch(35.8% 0.161 272.3);

Tailwind

colors: {
  custom: {
    50: '#7065b1',
    500: '#252b8f',
    950: '#000000',
  },
}

SCSS

$custom: #252b8f;
$custom-light: #7065b1;
$custom-dark: #000000;

JSON

{
  "hex": "#252b8f",
  "rgb": {
    "r": 37,
    "g": 43,
    "b": 143
  },
  "hsl": {
    "h": 236.604,
    "s": 58.889,
    "l": 35.294
  },
  "oklch": {
    "l": 0.35845,
    "c": 0.16141,
    "h": 272.3
  },
  "luminance": 0.04104
}

Semantic roles & 50–950 ramp

primary

#252B8F

secondary

#B9B357

accent

#D946E2

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090511

muted

#7B7A80

Preview Lab

Preview with #252B8F

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

Preview Lab → · Contrast checker → · Palette generator →