#281F7B#281F7B

#281F7B is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.0% C 0.148 H 278.4°. Best body text is #FFFFFF at 13.36:1 contrast (WCAG AA passes).

Color values

HEX	#281F7B
RGB	rgb(40, 31, 123)
HSL	hsl(246, 60%, 30%)
HSV	hsv(246, 75%, 48%)
CMYK	cmyk(67.5%, 74.8%, 0%, 51.8%)
CIE-LAB	lab(19.48, 33.66, -50.65)
CIE-LCH	lch(19.48, 60.82, 303.61°)
OKLab	oklab(32.03% 0.0216 -0.1462)
OKLCH	oklch(32.03% 0.148 278.4)
XYZ	xyz(4.9391, 2.8607, 19.0270)
Luminance	0.0286 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F7B #727B1F

analogous

#1F447B #281F7B #561F7B

triadic

#281F7B #7B281F #1F7B28

tetradic

#281F7B #7B1F44 #727B1F #1F7B56

square

#281F7B #7B1F44 #727B1F #1F7B56

split-complementary

#281F7B #7B561F #447B1F

monochromatic

#080619 #18134A #281F7B #382BAC #5244D0

Accessibility & contrast

On white

13.36

#281F7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#281F7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F7B

13.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F7B	#FFFFFF	#000000	##FFFFFF
##281F7B	1.00	13.36	1.57	13.36
#FFFFFF	13.36	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00337E

Deuteranopia (green-blind)

#002B79

Tritanopia (blue-blind)

#00394B

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #281f7b;
/* rgb */ color: rgb(40, 31, 123);
/* oklch */ color: oklch(32.0% 0.148 278.4);

Tailwind

colors: {
  custom: {
    50: '#6e5ca2',
    500: '#281f7b',
    950: '#000000',
  },
}

SCSS

$custom: #281f7b;
$custom-light: #6e5ca2;
$custom-dark: #000000;

JSON

{
  "hex": "#281f7b",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 123
  },
  "hsl": {
    "h": 245.87,
    "s": 59.74,
    "l": 30.196
  },
  "oklch": {
    "l": 0.32034,
    "c": 0.14779,
    "h": 278.4
  },
  "luminance": 0.02861
}

Semantic roles & 50–950 ramp

primary

#281F7B

secondary

#A4AE48

accent

#E345D3

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #281F7B

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

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