#251FAA#251FAA

#251FAA is a dark, highly saturated blue. Relative luminance 0.043; OKLCH L 37.1% C 0.207 H 271.9°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#251FAA
RGB	rgb(37, 31, 170)
HSL	hsl(243, 69%, 39%)
HSV	hsv(243, 82%, 67%)
CMYK	cmyk(78.2%, 81.8%, 0%, 33.3%)
CIE-LAB	lab(24.56, 48.83, -71.37)
CIE-LCH	lch(24.56, 86.48, 304.38°)
OKLab	oklab(37.1% 0.0067 -0.2065)
OKLCH	oklch(37.1% 0.207 271.9)
XYZ	xyz(8.5062, 4.2746, 38.3992)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#251FAA #A4AA1F

analogous

#1F5FAA #251FAA #6B1FAA

triadic

#251FAA #AA251F #1FAA25

tetradic

#251FAA #AA1F5F #A4AA1F #1FAA6B

square

#251FAA #AA1F5F #A4AA1F #1FAA6B

split-complementary

#251FAA #AA6B1F #5FAA1F

monochromatic

#0E0C42 #1A1676 #251FAA #352DD9 #6761E2

Accessibility & contrast

On white

11.32

#251FAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#251FAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #251FAA

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##251FAA	#FFFFFF	#000000	##FFFFFF
##251FAA	1.00	11.32	1.86	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041AE

Deuteranopia (green-blind)

#0033A8

Tritanopia (blue-blind)

#004B66

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #251faa;
/* rgb */ color: rgb(37, 31, 170);
/* oklch */ color: oklch(37.1% 0.207 271.9);

Tailwind

colors: {
  custom: {
    50: '#785fc5',
    500: '#251faa',
    950: '#000000',
  },
}

SCSS

$custom: #251faa;
$custom-light: #785fc5;
$custom-dark: #000000;

JSON

{
  "hex": "#251faa",
  "rgb": {
    "r": 37,
    "g": 31,
    "b": 170
  },
  "hsl": {
    "h": 242.59,
    "s": 69.154,
    "l": 39.412
  },
  "oklch": {
    "l": 0.37105,
    "c": 0.20666,
    "h": 271.9
  },
  "luminance": 0.04276
}

Semantic roles & 50–950 ramp

primary

#251FAA

secondary

#C2C75E

accent

#EC3CE4

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #251FAA

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

Preview Lab → · Contrast checker → · Palette generator →