#281F9E#281F9E

#281F9E is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.9% C 0.192 H 274.0°. Best body text is #FFFFFF at 11.80:1 contrast (WCAG AA passes).

Color values

HEX	#281F9E
RGB	rgb(40, 31, 158)
HSL	hsl(244, 67%, 37%)
HSV	hsv(244, 80%, 62%)
CMYK	cmyk(74.7%, 80.4%, 0%, 38%)
CIE-LAB	lab(23.33, 45.24, -66.11)
CIE-LCH	lch(23.33, 80.11, 304.39°)
OKLab	oklab(35.89% 0.0134 -0.1912)
OKLCH	oklch(35.89% 0.192 274)
XYZ	xyz(7.5346, 3.8989, 32.6966)
Luminance	0.0390 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F9E #959E1F

analogous

#1F569E #281F9E #681F9E

triadic

#281F9E #9E281F #1F9E28

tetradic

#281F9E #9E1F56 #959E1F #1F9E68

square

#281F9E #9E1F56 #959E1F #1F9E68

split-complementary

#281F9E #9E681F #569E1F

monochromatic

#0E0B38 #1B156B #281F9E #3529D1 #6259DE

Accessibility & contrast

On white

11.80

#281F9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#281F9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F9E

11.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F9E	#FFFFFF	#000000	##FFFFFF
##281F9E	1.00	11.80	1.78	11.80
#FFFFFF	11.80	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003DA2

Deuteranopia (green-blind)

#00329C

Tritanopia (blue-blind)

#00465F

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #281f9e;
/* rgb */ color: rgb(40, 31, 158);
/* oklch */ color: oklch(35.9% 0.192 274.0);

Tailwind

colors: {
  custom: {
    50: '#765ebc',
    500: '#281f9e',
    950: '#000000',
  },
}

SCSS

$custom: #281f9e;
$custom-light: #765ebc;
$custom-dark: #000000;

JSON

{
  "hex": "#281f9e",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 158
  },
  "hsl": {
    "h": 244.252,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.35893,
    "c": 0.19171,
    "h": 274
  },
  "luminance": 0.039
}

Semantic roles & 50–950 ramp

primary

#281F9E

secondary

#BBC256

accent

#EA3EDE

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #281F9E

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

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