#251EB3#251EB3

#251EB3 is a dark, highly saturated blue. Relative luminance 0.046; OKLCH L 38.1% C 0.218 H 271.3°. Best body text is #FFFFFF at 10.96:1 contrast (WCAG AA passes).

Color values

HEX	#251EB3
RGB	rgb(37, 30, 179)
HSL	hsl(243, 71%, 41%)
HSV	hsv(243, 83%, 70%)
CMYK	cmyk(79.3%, 83.2%, 0%, 29.8%)
CIE-LAB	lab(25.49, 52.07, -75.23)
CIE-LCH	lch(25.49, 91.50, 304.69°)
OKLab	oklab(38.06% 0.0048 -0.2177)
OKLCH	oklch(38.06% 0.218 271.3)
XYZ	xyz(9.3612, 4.5755, 43.0289)
Luminance	0.0458 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#251EB3 #ACB31E

analogous

#1E61B3 #251EB3 #6F1EB3

triadic

#251EB3 #B3251E #1EB325

tetradic

#251EB3 #B31E61 #ACB31E #1EB36F

square

#251EB3 #B31E61 #ACB31E #1EB36F

split-complementary

#251EB3 #B36F1E #61B31E

monochromatic

#0F0C4A #1A157F #251EB3 #3A32DD #6C66E5

Accessibility & contrast

On white

10.96

#251EB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#251EB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #251EB3

10.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##251EB3	#FFFFFF	#000000	##FFFFFF
##251EB3	1.00	10.96	1.92	10.96
#FFFFFF	10.96	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044B7

Deuteranopia (green-blind)

#0035B1

Tritanopia (blue-blind)

#004E6B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #251eb3;
/* rgb */ color: rgb(37, 30, 179);
/* oklch */ color: oklch(38.1% 0.218 271.3);

Tailwind

colors: {
  custom: {
    50: '#7b5fcb',
    500: '#251eb3',
    950: '#000000',
  },
}

SCSS

$custom: #251eb3;
$custom-light: #7b5fcb;
$custom-dark: #000000;

JSON

{
  "hex": "#251eb3",
  "rgb": {
    "r": 37,
    "g": 30,
    "b": 179
  },
  "hsl": {
    "h": 242.819,
    "s": 71.292,
    "l": 40.98
  },
  "oklch": {
    "l": 0.38062,
    "c": 0.21776,
    "h": 271.3
  },
  "luminance": 0.04577
}

Semantic roles & 50–950 ramp

primary

#251EB3

secondary

#C6CB62

accent

#EE3AE6

background

#F8F5FC

surface

#EFE9F9

border

#CAC5D2

text

#0B0514

muted

#7C7982

Preview Lab

Preview with #251EB3

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

Preview Lab → · Contrast checker → · Palette generator →