#281B88#281B88

#281B88 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.9% C 0.168 H 277.1°. Best body text is #FFFFFF at 13.10:1 contrast (WCAG AA passes).

Color values

HEX	#281B88
RGB	rgb(40, 27, 136)
HSL	hsl(247, 67%, 32%)
HSV	hsv(247, 80%, 53%)
CMYK	cmyk(70.6%, 80.1%, 0%, 46.7%)
CIE-LAB	lab(20.09, 40.25, -57.86)
CIE-LCH	lch(20.09, 70.48, 304.83°)
OKLab	oklab(32.89% 0.0209 -0.1672)
OKLCH	oklch(32.89% 0.168 277.1)
XYZ	xyz(5.7095, 3.0120, 23.5683)
Luminance	0.0301 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281B88 #7B881B

analogous

#1B4588 #281B88 #5F1B88

triadic

#281B88 #88281B #1B8828

tetradic

#281B88 #881B45 #7B881B #1B885F

square

#281B88 #881B45 #7B881B #1B885F

split-complementary

#281B88 #885F1B #45881B

monochromatic

#0A0722 #191155 #281B88 #3725BB #5644DA

Accessibility & contrast

On white

13.10

#281B88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#281B88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281B88

13.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281B88	#FFFFFF	#000000	##FFFFFF
##281B88	1.00	13.10	1.60	13.10
#FFFFFF	13.10	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00358B

Deuteranopia (green-blind)

#002C86

Tritanopia (blue-blind)

#003C51

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #281b88;
/* rgb */ color: rgb(40, 27, 136);
/* oklch */ color: oklch(32.9% 0.168 277.1);

Tailwind

colors: {
  custom: {
    50: '#715aac',
    500: '#281b88',
    950: '#000000',
  },
}

SCSS

$custom: #281b88;
$custom-light: #715aac;
$custom-dark: #000000;

JSON

{
  "hex": "#281b88",
  "rgb": {
    "r": 40,
    "g": 27,
    "b": 136
  },
  "hsl": {
    "h": 247.156,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.32889,
    "c": 0.16849,
    "h": 277.1
  },
  "luminance": 0.03013
}

Semantic roles & 50–950 ramp

primary

#281B88

secondary

#ADBB44

accent

#EA3ED5

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #281B88

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

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