#281F89#281F89

#281F89 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.5% C 0.166 H 276.4°. Best body text is #FFFFFF at 12.75:1 contrast (WCAG AA passes).

Color values

HEX	#281F89
RGB	rgb(40, 31, 137)
HSL	hsl(245, 63%, 33%)
HSV	hsv(245, 77%, 54%)
CMYK	cmyk(70.8%, 77.4%, 0%, 46.3%)
CIE-LAB	lab(20.97, 38.39, -57.04)
CIE-LCH	lch(20.97, 68.75, 303.95°)
OKLab	oklab(33.54% 0.0185 -0.1648)
OKLCH	oklch(33.54% 0.166 276.4)
XYZ	xyz(5.8789, 3.2367, 23.9770)
Luminance	0.0324 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F89 #80891F

analogous

#1F4B89 #281F89 #5D1F89

triadic

#281F89 #89281F #1F8928

tetradic

#281F89 #891F4B #80891F #1F895D

square

#281F89 #891F4B #80891F #1F895D

split-complementary

#281F89 #895D1F #4B891F

monochromatic

#0B0825 #191457 #281F89 #372ABB #584CD6

Accessibility & contrast

On white

12.75

#281F89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#281F89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F89

12.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F89	#FFFFFF	#000000	##FFFFFF
##281F89	1.00	12.75	1.65	12.75
#FFFFFF	12.75	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378C

Deuteranopia (green-blind)

#002E87

Tritanopia (blue-blind)

#003E53

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #281f89;
/* rgb */ color: rgb(40, 31, 137);
/* oklch */ color: oklch(33.5% 0.166 276.4);

Tailwind

colors: {
  custom: {
    50: '#715dad',
    500: '#281f89',
    950: '#000000',
  },
}

SCSS

$custom: #281f89;
$custom-light: #715dad;
$custom-dark: #000000;

JSON

{
  "hex": "#281f89",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 137
  },
  "hsl": {
    "h": 245.094,
    "s": 63.095,
    "l": 32.941
  },
  "oklch": {
    "l": 0.33537,
    "c": 0.16588,
    "h": 276.4
  },
  "luminance": 0.03237
}

Semantic roles & 50–950 ramp

primary

#281F89

secondary

#B0B94B

accent

#E642D8

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #281F89

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

Preview Lab → · Contrast checker → · Palette generator →