#281F90#281F90

#281F90 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.3% C 0.175 H 275.5°. Best body text is #FFFFFF at 12.43:1 contrast (WCAG AA passes).

Color values

HEX	#281F90
RGB	rgb(40, 31, 144)
HSL	hsl(245, 65%, 34%)
HSV	hsv(245, 78%, 56%)
CMYK	cmyk(72.2%, 78.5%, 0%, 43.5%)
CIE-LAB	lab(21.74, 40.71, -60.12)
CIE-LCH	lch(21.74, 72.61, 304.10°)
OKLab	oklab(34.31% 0.0168 -0.1738)
OKLCH	oklch(34.31% 0.175 275.5)
XYZ	xyz(6.3974, 3.4441, 26.7078)
Luminance	0.0345 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F90 #87901F

analogous

#1F4F90 #281F90 #611F90

triadic

#281F90 #90281F #1F9028

tetradic

#281F90 #901F4F #87901F #1F9061

square

#281F90 #901F4F #87901F #1F9061

split-complementary

#281F90 #90611F #4F901F

monochromatic

#0C092B #1A145E #281F90 #362AC2 #5B50D9

Accessibility & contrast

On white

12.43

#281F90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#281F90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F90

12.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F90	#FFFFFF	#000000	##FFFFFF
##281F90	1.00	12.43	1.69	12.43
#FFFFFF	12.43	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003993

Deuteranopia (green-blind)

#002F8E

Tritanopia (blue-blind)

#004157

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #281f90;
/* rgb */ color: rgb(40, 31, 144);
/* oklch */ color: oklch(34.3% 0.175 275.5);

Tailwind

colors: {
  custom: {
    50: '#735db2',
    500: '#281f90',
    950: '#000000',
  },
}

SCSS

$custom: #281f90;
$custom-light: #735db2;
$custom-dark: #000000;

JSON

{
  "hex": "#281f90",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 144
  },
  "hsl": {
    "h": 244.779,
    "s": 64.571,
    "l": 34.314
  },
  "oklch": {
    "l": 0.34311,
    "c": 0.17465,
    "h": 275.5
  },
  "luminance": 0.03445
}

Semantic roles & 50–950 ramp

primary

#281F90

secondary

#B4BC4E

accent

#E840DA

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #281F90

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

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