#281D99#281D99

#281D99 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 35.1% C 0.187 H 274.7°. Best body text is #FFFFFF at 12.17:1 contrast (WCAG AA passes).

Color values

HEX	#281D99
RGB	rgb(40, 29, 153)
HSL	hsl(245, 68%, 36%)
HSV	hsv(245, 81%, 60%)
CMYK	cmyk(73.9%, 81%, 0%, 40%)
CIE-LAB	lab(22.41, 44.66, -64.59)
CIE-LCH	lch(22.41, 78.53, 304.66°)
OKLab	oklab(35.08% 0.0154 -0.1868)
OKLCH	oklch(35.08% 0.187 274.7)
XYZ	xyz(7.0623, 3.6291, 30.4591)
Luminance	0.0363 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281D99 #8E991D

analogous

#1D5099 #281D99 #661D99

triadic

#281D99 #99281D #1D9928

tetradic

#281D99 #991D50 #8E991D #1D9966

square

#281D99 #991D50 #8E991D #1D9966

split-complementary

#281D99 #99661D #50991D

monochromatic

#0D0932 #1B1366 #281D99 #3527CC #5F52DE

Accessibility & contrast

On white

12.17

#281D99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#281D99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281D99

12.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281D99	#FFFFFF	#000000	##FFFFFF
##281D99	1.00	12.17	1.73	12.17
#FFFFFF	12.17	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B9C

Deuteranopia (green-blind)

#003097

Tritanopia (blue-blind)

#00435B

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #281d99;
/* rgb */ color: rgb(40, 29, 153);
/* oklch */ color: oklch(35.1% 0.187 274.7);

Tailwind

colors: {
  custom: {
    50: '#755db8',
    500: '#281d99',
    950: '#000000',
  },
}

SCSS

$custom: #281d99;
$custom-light: #755db8;
$custom-dark: #000000;

JSON

{
  "hex": "#281d99",
  "rgb": {
    "r": 40,
    "g": 29,
    "b": 153
  },
  "hsl": {
    "h": 245.323,
    "s": 68.132,
    "l": 35.686
  },
  "oklch": {
    "l": 0.35076,
    "c": 0.18742,
    "h": 274.7
  },
  "luminance": 0.0363
}

Semantic roles & 50–950 ramp

primary

#281D99

secondary

#B7C151

accent

#EB3DDC

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #281D99

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

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