#281F6C#281F6C

#281F6C is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.5% C 0.127 H 281.0°. Best body text is #FFFFFF at 13.97:1 contrast (WCAG AA passes).

Color values

HEX	#281F6C
RGB	rgb(40, 31, 108)
HSL	hsl(247, 55%, 27%)
HSV	hsv(247, 71%, 42%)
CMYK	cmyk(63%, 71.3%, 0%, 57.6%)
CIE-LAB	lab(17.98, 28.48, -43.44)
CIE-LCH	lch(17.98, 51.94, 303.25°)
OKLab	oklab(30.51% 0.0243 -0.1251)
OKLCH	oklch(30.51% 0.127 281)
XYZ	xyz(4.0710, 2.5135, 14.4551)
Luminance	0.0251 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F6C #636C1F

analogous

#1F3D6C #281F6C #4F1F6C

triadic

#281F6C #6C281F #1F6C28

tetradic

#281F6C #6C1F3D #636C1F #1F6C4F

square

#281F6C #6C1F3D #636C1F #1F6C4F

split-complementary

#281F6C #6C4F1F #3D6C1F

monochromatic

#090718 #16113C #281F6C #3A2D9C #4E3EC8

Accessibility & contrast

On white

13.97

#281F6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#281F6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F6C

13.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F6C	#FFFFFF	#000000	##FFFFFF
##281F6C	1.00	13.97	1.50	13.97
#FFFFFF	13.97	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	13.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F6E

Deuteranopia (green-blind)

#00296B

Tritanopia (blue-blind)

#003342

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #281f6c;
/* rgb */ color: rgb(40, 31, 108);
/* oklch */ color: oklch(30.5% 0.127 281.0);

Tailwind

colors: {
  custom: {
    50: '#6b5b97',
    500: '#281f6c',
    950: '#000000',
  },
}

SCSS

$custom: #281f6c;
$custom-light: #6b5b97;
$custom-dark: #000000;

JSON

{
  "hex": "#281f6c",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 108
  },
  "hsl": {
    "h": 247.013,
    "s": 55.396,
    "l": 27.255
  },
  "oklch": {
    "l": 0.30505,
    "c": 0.12747,
    "h": 281
  },
  "luminance": 0.02514
}

Semantic roles & 50–950 ramp

primary

#281F6C

secondary

#96A047

accent

#DF49CD

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040D

muted

#7A797E

Preview Lab

Preview with #281F6C

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

Preview Lab → · Contrast checker → · Palette generator →