#281A9A#281A9A

#281A9A is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.8% C 0.191 H 274.9°. Best body text is #FFFFFF at 12.32:1 contrast (WCAG AA passes).

Color values

HEX	#281A9A
RGB	rgb(40, 26, 154)
HSL	hsl(247, 71%, 35%)
HSV	hsv(247, 83%, 60%)
CMYK	cmyk(74%, 83.1%, 0%, 39.6%)
CIE-LAB	lab(22.02, 46.43, -65.83)
CIE-LCH	lch(22.02, 80.56, 305.20°)
OKLab	oklab(34.85% 0.0163 -0.1903)
OKLCH	oklch(34.85% 0.191 274.9)
XYZ	xyz(7.0753, 3.5223, 30.8726)
Luminance	0.0352 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281A9A #8C9A1A

analogous

#1A4C9A #281A9A #681A9A

triadic

#281A9A #9A281A #1A9A28

tetradic

#281A9A #9A1A4C #8C9A1A #1A9A68

square

#281A9A #9A1A4C #8C9A1A #1A9A68

split-complementary

#281A9A #9A681A #4C9A1A

monochromatic

#0D0831 #1A1166 #281A9A #3623CE #5E4DE1

Accessibility & contrast

On white

12.32

#281A9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#281A9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281A9A

12.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281A9A	#FFFFFF	#000000	##FFFFFF
##281A9A	1.00	12.32	1.70	12.32
#FFFFFF	12.32	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A9D

Deuteranopia (green-blind)

#002F98

Tritanopia (blue-blind)

#00435B

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #281a9a;
/* rgb */ color: rgb(40, 26, 154);
/* oklch */ color: oklch(34.8% 0.191 274.9);

Tailwind

colors: {
  custom: {
    50: '#765bb9',
    500: '#281a9a',
    950: '#000000',
  },
}

SCSS

$custom: #281a9a;
$custom-light: #765bb9;
$custom-dark: #000000;

JSON

{
  "hex": "#281a9a",
  "rgb": {
    "r": 40,
    "g": 26,
    "b": 154
  },
  "hsl": {
    "h": 246.563,
    "s": 71.111,
    "l": 35.294
  },
  "oklch": {
    "l": 0.34847,
    "c": 0.19103,
    "h": 274.9
  },
  "luminance": 0.03523
}

Semantic roles & 50–950 ramp

primary

#281A9A

secondary

#B6C34D

accent

#EE3ADA

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #281A9A

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

Preview Lab → · Contrast checker → · Palette generator →