#251DBD#251DBD

#251DBD is a dark, highly saturated blue. Relative luminance 0.049; OKLCH L 39.2% C 0.230 H 270.7°. Best body text is #FFFFFF at 10.56:1 contrast (WCAG AA passes).

Color values

HEX	#251DBD
RGB	rgb(37, 29, 189)
HSL	hsl(243, 73%, 43%)
HSV	hsv(243, 85%, 74%)
CMYK	cmyk(80.4%, 84.7%, 0%, 25.9%)
CIE-LAB	lab(26.58, 55.51, -79.38)
CIE-LCH	lch(26.58, 96.86, 304.96°)
OKLab	oklab(39.16% 0.0026 -0.2297)
OKLCH	oklch(39.16% 0.23 270.7)
XYZ	xyz(10.3845, 4.9450, 48.5414)
Luminance	0.0495 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#251DBD #B5BD1D

analogous

#1D65BD #251DBD #751DBD

triadic

#251DBD #BD251D #1DBD25

tetradic

#251DBD #BD1D65 #B5BD1D #1DBD75

square

#251DBD #BD1D65 #B5BD1D #1DBD75

split-complementary

#251DBD #BD751D #65BD1D

monochromatic

#100D53 #1B1588 #251DBD #3F37E0 #726CE8

Accessibility & contrast

On white

10.56

#251DBD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#251DBD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #251DBD

10.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##251DBD	#FFFFFF	#000000	##FFFFFF
##251DBD	1.00	10.56	1.99	10.56
#FFFFFF	10.56	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047C1

Deuteranopia (green-blind)

#0037BA

Tritanopia (blue-blind)

#005270

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #251dbd;
/* rgb */ color: rgb(37, 29, 189);
/* oklch */ color: oklch(39.2% 0.230 270.7);

Tailwind

colors: {
  custom: {
    50: '#7d5fd2',
    500: '#251dbd',
    950: '#000000',
  },
}

SCSS

$custom: #251dbd;
$custom-light: #7d5fd2;
$custom-dark: #000000;

JSON

{
  "hex": "#251dbd",
  "rgb": {
    "r": 37,
    "g": 29,
    "b": 189
  },
  "hsl": {
    "h": 243,
    "s": 73.394,
    "l": 42.745
  },
  "oklch": {
    "l": 0.39164,
    "c": 0.22969,
    "h": 270.7
  },
  "luminance": 0.04946
}

Semantic roles & 50–950 ramp

primary

#251DBD

secondary

#C9CE67

accent

#F038E7

background

#F8F5FD

surface

#F0EAFA

border

#CBC6D3

text

#0C0514

muted

#7D7983

Preview Lab

Preview with #251DBD

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

Preview Lab → · Contrast checker → · Palette generator →