#281A8D#281A8D

#281A8D is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.3% C 0.176 H 276.5°. Best body text is #FFFFFF at 12.94:1 contrast (WCAG AA passes).

Color values

HEX	#281A8D
RGB	rgb(40, 26, 141)
HSL	hsl(247, 69%, 33%)
HSV	hsv(247, 82%, 55%)
CMYK	cmyk(71.6%, 81.6%, 0%, 44.7%)
CIE-LAB	lab(20.49, 42.37, -60.33)
CIE-LCH	lch(20.49, 73.72, 305.08°)
OKLab	oklab(33.34% 0.02 -0.1744)
OKLCH	oklch(33.34% 0.176 276.5)
XYZ	xyz(6.0506, 3.1124, 25.4760)
Luminance	0.0311 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281A8D #7F8D1A

analogous

#1A468D #281A8D #611A8D

triadic

#281A8D #8D281A #1A8D28

tetradic

#281A8D #8D1A46 #7F8D1A #1A8D61

square

#281A8D #8D1A46 #7F8D1A #1A8D61

split-complementary

#281A8D #8D611A #468D1A

monochromatic

#0B0726 #191059 #281A8D #3724C1 #5745DD

Accessibility & contrast

On white

12.94

#281A8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#281A8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281A8D

12.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281A8D	#FFFFFF	#000000	##FFFFFF
##281A8D	1.00	12.94	1.62	12.94
#FFFFFF	12.94	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003690

Deuteranopia (green-blind)

#002C8B

Tritanopia (blue-blind)

#003D54

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #281a8d;
/* rgb */ color: rgb(40, 26, 141);
/* oklch */ color: oklch(33.3% 0.176 276.5);

Tailwind

colors: {
  custom: {
    50: '#735ab0',
    500: '#281a8d',
    950: '#000000',
  },
}

SCSS

$custom: #281a8d;
$custom-light: #735ab0;
$custom-dark: #000000;

JSON

{
  "hex": "#281a8d",
  "rgb": {
    "r": 40,
    "g": 26,
    "b": 141
  },
  "hsl": {
    "h": 247.304,
    "s": 68.862,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33335,
    "c": 0.17551,
    "h": 276.5
  },
  "luminance": 0.03113
}

Semantic roles & 50–950 ramp

primary

#281A8D

secondary

#AFBE45

accent

#EC3CD6

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #281A8D

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

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