#281D9A#281D9A

#281D9A is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.2% C 0.189 H 274.6°. Best body text is #FFFFFF at 12.12:1 contrast (WCAG AA passes).

Color values

HEX	#281D9A
RGB	rgb(40, 29, 154)
HSL	hsl(245, 68%, 36%)
HSV	hsv(245, 81%, 60%)
CMYK	cmyk(74%, 81.2%, 0%, 39.6%)
CIE-LAB	lab(22.52, 44.98, -65.01)
CIE-LCH	lch(22.52, 79.05, 304.68°)
OKLab	oklab(35.19% 0.0152 -0.188)
OKLCH	oklch(35.19% 0.189 274.6)
XYZ	xyz(7.1452, 3.6622, 30.8959)
Luminance	0.0366 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281D9A #8F9A1D

analogous

#1D509A #281D9A #661D9A

triadic

#281D9A #9A281D #1D9A28

tetradic

#281D9A #9A1D50 #8F9A1D #1D9A66

square

#281D9A #9A1D50 #8F9A1D #1D9A66

split-complementary

#281D9A #9A661D #509A1D

monochromatic

#0D0A33 #1B1366 #281D9A #3527CE #5F53DF

Accessibility & contrast

On white

12.12

#281D9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#281D9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281D9A

12.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281D9A	#FFFFFF	#000000	##FFFFFF
##281D9A	1.00	12.12	1.73	12.12
#FFFFFF	12.12	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B9D

Deuteranopia (green-blind)

#003098

Tritanopia (blue-blind)

#00445C

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #281d9a;
/* rgb */ color: rgb(40, 29, 154);
/* oklch */ color: oklch(35.2% 0.189 274.6);

Tailwind

colors: {
  custom: {
    50: '#765db9',
    500: '#281d9a',
    950: '#000000',
  },
}

SCSS

$custom: #281d9a;
$custom-light: #765db9;
$custom-dark: #000000;

JSON

{
  "hex": "#281d9a",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 154
  },
  "hsl": {
    "h": 245.28,
    "s": 68.306,
    "l": 35.882
  },
  "oklch": {
    "l": 0.35192,
    "c": 0.18861,
    "h": 274.6
  },
  "luminance": 0.03663
}

Semantic roles & 50–950 ramp

primary

#281D9A

secondary

#B8C251

accent

#EB3DDC

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #281D9A

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

Preview Lab → · Contrast checker → · Palette generator →