#281A8E#281A8E

#281A8E is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.5% C 0.177 H 276.4°. Best body text is #FFFFFF at 12.89:1 contrast (WCAG AA passes).

Color values

HEX	#281A8E
RGB	rgb(40, 26, 142)
HSL	hsl(247, 69%, 33%)
HSV	hsv(247, 82%, 56%)
CMYK	cmyk(71.8%, 81.7%, 0%, 44.3%)
CIE-LAB	lab(20.61, 42.68, -60.76)
CIE-LCH	lch(20.61, 74.25, 305.09°)
OKLab	oklab(33.45% 0.0197 -0.1756)
OKLCH	oklch(33.45% 0.177 276.4)
XYZ	xyz(6.1254, 3.1423, 25.8697)
Luminance	0.0314 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281A8E #808E1A

analogous

#1A468E #281A8E #621A8E

triadic

#281A8E #8E281A #1A8E28

tetradic

#281A8E #8E1A46 #808E1A #1A8E62

square

#281A8E #8E1A46 #808E1A #1A8E62

split-complementary

#281A8E #8E621A #468E1A

monochromatic

#0B0727 #19115A #281A8E #3723C2 #5845DD

Accessibility & contrast

On white

12.89

#281A8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#281A8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281A8E

12.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281A8E	#FFFFFF	#000000	##FFFFFF
##281A8E	1.00	12.89	1.63	12.89
#FFFFFF	12.89	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003691

Deuteranopia (green-blind)

#002D8C

Tritanopia (blue-blind)

#003E54

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #281a8e;
/* rgb */ color: rgb(40, 26, 142);
/* oklch */ color: oklch(33.5% 0.177 276.4);

Tailwind

colors: {
  custom: {
    50: '#735ab0',
    500: '#281a8e',
    950: '#000000',
  },
}

SCSS

$custom: #281a8e;
$custom-light: #735ab0;
$custom-dark: #000000;

JSON

{
  "hex": "#281a8e",
  "rgb": {
    "r": 40,
    "g": 26,
    "b": 142
  },
  "hsl": {
    "h": 247.241,
    "s": 69.048,
    "l": 32.941
  },
  "oklch": {
    "l": 0.3345,
    "c": 0.17672,
    "h": 276.4
  },
  "luminance": 0.03143
}

Semantic roles & 50–950 ramp

primary

#281A8E

secondary

#B0BE45

accent

#EC3CD7

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #281A8E

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

Preview Lab → · Contrast checker → · Palette generator →