#251FAD#251FAD

#251FAD is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.5% C 0.210 H 271.6°. Best body text is #FFFFFF at 11.18:1 contrast (WCAG AA passes).

Color values

HEX	#251FAD
RGB	rgb(37, 31, 173)
HSL	hsl(243, 70%, 40%)
HSV	hsv(243, 82%, 68%)
CMYK	cmyk(78.6%, 82.1%, 0%, 32.2%)
CIE-LAB	lab(24.92, 49.76, -72.58)
CIE-LCH	lch(24.92, 88.00, 304.43°)
OKLab	oklab(37.46% 0.006 -0.21)
OKLCH	oklch(37.46% 0.21 271.6)
XYZ	xyz(8.7932, 4.3894, 39.9109)
Luminance	0.0439 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#251FAD #A7AD1F

analogous

#1F60AD #251FAD #6C1FAD

triadic

#251FAD #AD251F #1FAD25

tetradic

#251FAD #AD1F60 #A7AD1F #1FAD6C

square

#251FAD #AD1F60 #A7AD1F #1FAD6C

split-complementary

#251FAD #AD6C1F #60AD1F

monochromatic

#0F0C45 #1A1679 #251FAD #372FDA #6963E3

Accessibility & contrast

On white

11.18

#251FAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#251FAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #251FAD

11.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##251FAD	#FFFFFF	#000000	##FFFFFF
##251FAD	1.00	11.18	1.88	11.18
#FFFFFF	11.18	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B1

Deuteranopia (green-blind)

#0034AB

Tritanopia (blue-blind)

#004C67

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #251fad;
/* rgb */ color: rgb(37, 31, 173);
/* oklch */ color: oklch(37.5% 0.210 271.6);

Tailwind

colors: {
  custom: {
    50: '#795fc7',
    500: '#251fad',
    950: '#000000',
  },
}

SCSS

$custom: #251fad;
$custom-light: #795fc7;
$custom-dark: #000000;

JSON

{
  "hex": "#251fad",
  "rgb": {
    "r": 37,
    "g": 31,
    "b": 173
  },
  "hsl": {
    "h": 242.535,
    "s": 69.608,
    "l": 40
  },
  "oklch": {
    "l": 0.37459,
    "c": 0.21014,
    "h": 271.6
  },
  "luminance": 0.0439
}

Semantic roles & 50–950 ramp

primary

#251FAD

secondary

#C4C860

accent

#EC3BE5

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #251FAD

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

Preview Lab → · Contrast checker → · Palette generator →