#281F83#281F83

#281F83 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.9% C 0.158 H 277.2°. Best body text is #FFFFFF at 13.01:1 contrast (WCAG AA passes).

Color values

HEX	#281F83
RGB	rgb(40, 31, 131)
HSL	hsl(245, 62%, 32%)
HSV	hsv(245, 76%, 51%)
CMYK	cmyk(69.5%, 76.3%, 0%, 48.6%)
CIE-LAB	lab(20.32, 36.38, -54.33)
CIE-LCH	lch(20.32, 65.39, 303.81°)
OKLab	oklab(32.89% 0.0198 -0.157)
OKLCH	oklch(32.89% 0.158 277.2)
XYZ	xyz(5.4605, 3.0693, 21.7730)
Luminance	0.0307 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F83 #7A831F

analogous

#1F4883 #281F83 #5A1F83

triadic

#281F83 #83281F #1F8328

tetradic

#281F83 #831F48 #7A831F #1F835A

square

#281F83 #831F48 #7A831F #1F835A

split-complementary

#281F83 #835A1F #48831F

monochromatic

#0A0820 #191352 #281F83 #372BB4 #5549D4

Accessibility & contrast

On white

13.01

#281F83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#281F83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F83

13.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F83	#FFFFFF	#000000	##FFFFFF
##281F83	1.00	13.01	1.61	13.01
#FFFFFF	13.01	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003586

Deuteranopia (green-blind)

#002D81

Tritanopia (blue-blind)

#003C4F

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #281f83;
/* rgb */ color: rgb(40, 31, 131);
/* oklch */ color: oklch(32.9% 0.158 277.2);

Tailwind

colors: {
  custom: {
    50: '#705ca8',
    500: '#281f83',
    950: '#000000',
  },
}

SCSS

$custom: #281f83;
$custom-light: #705ca8;
$custom-dark: #000000;

JSON

{
  "hex": "#281f83",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 131
  },
  "hsl": {
    "h": 245.4,
    "s": 61.728,
    "l": 31.765
  },
  "oklch": {
    "l": 0.32885,
    "c": 0.15823,
    "h": 277.2
  },
  "luminance": 0.0307
}

Semantic roles & 50–950 ramp

primary

#281F83

secondary

#ACB648

accent

#E543D6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #281F83

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

Preview Lab → · Contrast checker → · Palette generator →