#281A91#281A91

#281A91 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.8% C 0.180 H 276.0°. Best body text is #FFFFFF at 12.75:1 contrast (WCAG AA passes).

Color values

HEX	#281A91
RGB	rgb(40, 26, 145)
HSL	hsl(247, 70%, 34%)
HSV	hsv(247, 82%, 57%)
CMYK	cmyk(72.4%, 82.1%, 0%, 43.1%)
CIE-LAB	lab(20.96, 43.63, -62.04)
CIE-LCH	lch(20.96, 75.85, 305.11°)
OKLab	oklab(33.8% 0.0188 -0.1793)
OKLCH	oklch(33.8% 0.18 276)
XYZ	xyz(6.3536, 3.2336, 27.0719)
Luminance	0.0323 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281A91 #83911A

analogous

#1A4791 #281A91 #631A91

triadic

#281A91 #91281A #1A9128

tetradic

#281A91 #911A47 #83911A #1A9163

square

#281A91 #911A47 #83911A #1A9163

split-complementary

#281A91 #91631A #47911A

monochromatic

#0B0729 #1A115D #281A91 #3623C5 #5947DE

Accessibility & contrast

On white

12.75

#281A91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#281A91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281A91

12.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281A91	#FFFFFF	#000000	##FFFFFF
##281A91	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)

#003794

Deuteranopia (green-blind)

#002D8F

Tritanopia (blue-blind)

#003F56

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #281a91;
/* rgb */ color: rgb(40, 26, 145);
/* oklch */ color: oklch(33.8% 0.180 276.0);

Tailwind

colors: {
  custom: {
    50: '#745ab3',
    500: '#281a91',
    950: '#000000',
  },
}

SCSS

$custom: #281a91;
$custom-light: #745ab3;
$custom-dark: #000000;

JSON

{
  "hex": "#281a91",
  "rgb": {
    "r": 40,
    "g": 26,
    "b": 145
  },
  "hsl": {
    "h": 247.059,
    "s": 69.591,
    "l": 33.529
  },
  "oklch": {
    "l": 0.33796,
    "c": 0.18033,
    "h": 276
  },
  "luminance": 0.03234
}

Semantic roles & 50–950 ramp

primary

#281A91

secondary

#B1C047

accent

#EC3BD8

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #281A91

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

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