#25288F#25288F

#25288F is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.3% C 0.165 H 272.9°. Best body text is #FFFFFF at 11.81:1 contrast (WCAG AA passes).

Color values

HEX	#25288F
RGB	rgb(37, 40, 143)
HSL	hsl(238, 59%, 35%)
HSV	hsv(238, 74%, 56%)
CMYK	cmyk(74.1%, 72%, 0%, 43.9%)
CIE-LAB	lab(23.32, 34.77, -56.91)
CIE-LCH	lch(23.32, 66.70, 301.42°)
OKLab	oklab(35.34% 0.0083 -0.1646)
OKLCH	oklch(35.34% 0.165 272.9)
XYZ	xyz(6.4780, 3.8934, 26.3914)
Luminance	0.0389 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#25288F #8F8C25

analogous

#255D8F #25288F #57258F

triadic

#25288F #8F2528 #288F25

tetradic

#25288F #8F255D #8F8C25 #258F57

square

#25288F #8F255D #8F8C25 #258F57

split-complementary

#25288F #8F5725 #5D8F25

monochromatic

#0C0D2E #181A5E #25288F #3236C0 #5A5ED4

Accessibility & contrast

On white

11.81

#25288F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#25288F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #25288F

11.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##25288F	#FFFFFF	#000000	##FFFFFF
##25288F	1.00	11.81	1.78	11.81
#FFFFFF	11.81	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D92

Deuteranopia (green-blind)

#00328D

Tritanopia (blue-blind)

#004558

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #25288f;
/* rgb */ color: rgb(37, 40, 143);
/* oklch */ color: oklch(35.3% 0.165 272.9);

Tailwind

colors: {
  custom: {
    50: '#7163b1',
    500: '#25288f',
    950: '#000000',
  },
}

SCSS

$custom: #25288f;
$custom-light: #7163b1;
$custom-dark: #000000;

JSON

{
  "hex": "#25288f",
  "rgb": {
    "r": 37,
    "g": 40,
    "b": 143
  },
  "hsl": {
    "h": 238.302,
    "s": 58.889,
    "l": 35.294
  },
  "oklch": {
    "l": 0.35344,
    "c": 0.16483,
    "h": 272.9
  },
  "luminance": 0.03894
}

Semantic roles & 50–950 ramp

primary

#25288F

secondary

#B9B657

accent

#DE46E2

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#090511

muted

#7B7980

Preview Lab

Preview with #25288F

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

Preview Lab → · Contrast checker → · Palette generator →