#281B89#281B89

#281B89 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 33.0% C 0.170 H 277.0°. Best body text is #FFFFFF at 13.06:1 contrast (WCAG AA passes).

Color values

HEX	#281B89
RGB	rgb(40, 27, 137)
HSL	hsl(247, 67%, 32%)
HSV	hsv(247, 80%, 54%)
CMYK	cmyk(70.8%, 80.3%, 0%, 46.3%)
CIE-LAB	lab(20.21, 40.57, -58.30)
CIE-LCH	lch(20.21, 71.03, 304.84°)
OKLab	oklab(33% 0.0206 -0.1685)
OKLCH	oklch(33% 0.17 277)
XYZ	xyz(5.7809, 3.0406, 23.9443)
Luminance	0.0304 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B89 #7C891B

analogous

#1B4589 #281B89 #5F1B89

triadic

#281B89 #89281B #1B8928

tetradic

#281B89 #891B45 #7C891B #1B895F

square

#281B89 #891B45 #7C891B #1B895F

split-complementary

#281B89 #895F1B #45891B

monochromatic

#0A0723 #191156 #281B89 #3725BC #5644DA

Accessibility & contrast

On white

13.06

#281B89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#281B89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B89

13.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B89	#FFFFFF	#000000	##FFFFFF
##281B89	1.00	13.06	1.61	13.06
#FFFFFF	13.06	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00358C

Deuteranopia (green-blind)

#002C87

Tritanopia (blue-blind)

#003C52

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #281b89;
/* rgb */ color: rgb(40, 27, 137);
/* oklch */ color: oklch(33.0% 0.170 277.0);

Tailwind

colors: {
  custom: {
    50: '#725aad',
    500: '#281b89',
    950: '#000000',
  },
}

SCSS

$custom: #281b89;
$custom-light: #725aad;
$custom-dark: #000000;

JSON

{
  "hex": "#281b89",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 137
  },
  "hsl": {
    "h": 247.091,
    "s": 67.073,
    "l": 32.157
  },
  "oklch": {
    "l": 0.33002,
    "c": 0.16972,
    "h": 277
  },
  "luminance": 0.03041
}

Semantic roles & 50–950 ramp

primary

#281B89

secondary

#ADBC44

accent

#EA3ED6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #281B89

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

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