#281781#281781

#281781 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.6% C 0.163 H 278.8°. Best body text is #FFFFFF at 13.73:1 contrast (WCAG AA passes).

Color values

HEX	#281781
RGB	rgb(40, 23, 129)
HSL	hsl(250, 70%, 30%)
HSV	hsv(250, 82%, 51%)
CMYK	cmyk(69%, 82.2%, 0%, 49.4%)
CIE-LAB	lab(18.58, 40.07, -55.95)
CIE-LCH	lch(18.58, 68.82, 305.61°)
OKLab	oklab(31.6% 0.0249 -0.1616)
OKLCH	oklch(31.6% 0.163 278.8)
XYZ	xyz(5.1426, 2.6485, 21.0048)
Luminance	0.0265 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281781 #708117

analogous

#173B81 #281781 #5D1781

triadic

#281781 #812817 #178128

tetradic

#281781 #81173B #708117 #17815D

square

#281781 #81173B #708117 #17815D

split-complementary

#281781 #815D17 #3B8117

monochromatic

#08051A #180E4D #281781 #3820B5 #5137DB

Accessibility & contrast

On white

13.73

#281781 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#281781 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281781

13.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281781	#FFFFFF	#000000	##FFFFFF
##281781	1.00	13.73	1.53	13.73
#FFFFFF	13.73	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003184

Deuteranopia (green-blind)

#00297F

Tritanopia (blue-blind)

#00374C

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #281781;
/* rgb */ color: rgb(40, 23, 129);
/* oklch */ color: oklch(31.6% 0.163 278.8);

Tailwind

colors: {
  custom: {
    50: '#7058a7',
    500: '#281781',
    950: '#000000',
  },
}

SCSS

$custom: #281781;
$custom-light: #7058a7;
$custom-dark: #000000;

JSON

{
  "hex": "#281781",
  "rgb": {
    "r": 40,
    "g": 23,
    "b": 129
  },
  "hsl": {
    "h": 249.623,
    "s": 69.737,
    "l": 29.804
  },
  "oklch": {
    "l": 0.31597,
    "c": 0.16349,
    "h": 278.8
  },
  "luminance": 0.02649
}

Semantic roles & 50–950 ramp

primary

#281781

secondary

#A2B53E

accent

#ED3BD0

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #281781

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

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