#281F73#281F73

#281F73 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.2% C 0.137 H 279.7°. Best body text is #FFFFFF at 13.69:1 contrast (WCAG AA passes).

Color values

HEX	#281F73
RGB	rgb(40, 31, 115)
HSL	hsl(246, 58%, 29%)
HSV	hsv(246, 73%, 45%)
CMYK	cmyk(65.2%, 73%, 0%, 54.9%)
CIE-LAB	lab(18.66, 30.91, -46.85)
CIE-LCH	lch(18.66, 56.13, 303.41°)
OKLab	oklab(31.21% 0.0231 -0.1351)
OKLCH	oklch(31.21% 0.137 279.7)
XYZ	xyz(4.4586, 2.6686, 16.4965)
Luminance	0.0267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F73 #6A731F

analogous

#1F4073 #281F73 #521F73

triadic

#281F73 #73281F #1F7328

tetradic

#281F73 #731F40 #6A731F #1F7352

square

#281F73 #731F40 #6A731F #1F7352

split-complementary

#281F73 #73521F #40731F

monochromatic

#080618 #171243 #281F73 #392CA3 #5041CC

Accessibility & contrast

On white

13.69

#281F73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#281F73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F73

13.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F73	#FFFFFF	#000000	##FFFFFF
##281F73	1.00	13.69	1.53	13.69
#FFFFFF	13.69	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003176

Deuteranopia (green-blind)

#002A71

Tritanopia (blue-blind)

#003646

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #281f73;
/* rgb */ color: rgb(40, 31, 115);
/* oklch */ color: oklch(31.2% 0.137 279.7);

Tailwind

colors: {
  custom: {
    50: '#6c5c9c',
    500: '#281f73',
    950: '#000000',
  },
}

SCSS

$custom: #281f73;
$custom-light: #6c5c9c;
$custom-dark: #000000;

JSON

{
  "hex": "#281f73",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 115
  },
  "hsl": {
    "h": 246.429,
    "s": 57.534,
    "l": 28.627
  },
  "oklch": {
    "l": 0.31207,
    "c": 0.13708,
    "h": 279.7
  },
  "luminance": 0.02669
}

Semantic roles & 50–950 ramp

primary

#281F73

secondary

#9DA747

accent

#E147D0

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#08040E

muted

#7A797E

Preview Lab

Preview with #281F73

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

Preview Lab → · Contrast checker → · Palette generator →