#251FA9#251FA9

#251FA9 is a dark, highly saturated blue. Relative luminance 0.042; OKLCH L 37.0% C 0.205 H 271.9°. Best body text is #FFFFFF at 11.37:1 contrast (WCAG AA passes).

Color values

HEX	#251FA9
RGB	rgb(37, 31, 169)
HSL	hsl(243, 69%, 39%)
HSV	hsv(243, 82%, 66%)
CMYK	cmyk(78.1%, 81.7%, 0%, 33.7%)
CIE-LAB	lab(24.44, 48.51, -70.97)
CIE-LCH	lch(24.44, 85.96, 304.36°)
OKLab	oklab(36.99% 0.0069 -0.2054)
OKLCH	oklch(36.99% 0.206 271.9)
XYZ	xyz(8.4120, 4.2369, 37.9029)
Luminance	0.0424 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#251FA9 #A3A91F

analogous

#1F5EA9 #251FA9 #6A1FA9

triadic

#251FA9 #A9251F #1FA925

tetradic

#251FA9 #A91F5E #A3A91F #1FA96A

square

#251FA9 #A91F5E #A3A91F #1FA96A

split-complementary

#251FA9 #A96A1F #5EA91F

monochromatic

#0E0C42 #1A1675 #251FA9 #342DD8 #6660E2

Accessibility & contrast

On white

11.37

#251FA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#251FA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #251FA9

11.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##251FA9	#FFFFFF	#000000	##FFFFFF
##251FA9	1.00	11.37	1.85	11.37
#FFFFFF	11.37	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041AD

Deuteranopia (green-blind)

#0033A7

Tritanopia (blue-blind)

#004B65

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #251fa9;
/* rgb */ color: rgb(37, 31, 169);
/* oklch */ color: oklch(37.0% 0.205 271.9);

Tailwind

colors: {
  custom: {
    50: '#785fc4',
    500: '#251fa9',
    950: '#000000',
  },
}

SCSS

$custom: #251fa9;
$custom-light: #785fc4;
$custom-dark: #000000;

JSON

{
  "hex": "#251fa9",
  "rgb": {
    "r": 37,
    "g": 31,
    "b": 169
  },
  "hsl": {
    "h": 242.609,
    "s": 69,
    "l": 39.216
  },
  "oklch": {
    "l": 0.36988,
    "c": 0.2055,
    "h": 271.9
  },
  "luminance": 0.04238
}

Semantic roles & 50–950 ramp

primary

#251FA9

secondary

#C2C75D

accent

#EC3CE4

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #251FA9

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

Preview Lab → · Contrast checker → · Palette generator →