#281F56#281F56

#281F56 is a dark, moderate blue. Relative luminance 0.021; OKLCH L 28.5% C 0.095 H 286.1°. Best body text is #FFFFFF at 14.78:1 contrast (WCAG AA passes).

Color values

HEX	#281F56
RGB	rgb(40, 31, 86)
HSL	hsl(250, 47%, 23%)
HSV	hsv(250, 64%, 34%)
CMYK	cmyk(53.5%, 64%, 0%, 66.3%)
CIE-LAB	lab(16.02, 20.78, -32.07)
CIE-LCH	lch(16.02, 38.22, 302.94°)
OKLab	oklab(28.47% 0.0265 -0.0917)
OKLCH	oklch(28.47% 0.095 286.1)
XYZ	xyz(3.0443, 2.1028, 9.0478)
Luminance	0.0210 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#281F56 #4D561F

analogous

#1F3156 #281F56 #431F56

triadic

#281F56 #56281F #1F5628

tetradic

#281F56 #561F31 #4D561F #1F5643

square

#281F56 #561F31 #4D561F #1F5643

split-complementary

#281F56 #56431F #31561F

monochromatic

#0A0816 #130F29 #281F56 #3D2F83 #523FB0

Accessibility & contrast

On white

14.78

#281F56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#281F56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #281F56

14.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##281F56	#FFFFFF	#000000	##FFFFFF
##281F56	1.00	14.78	1.42	14.78
#FFFFFF	14.78	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002958

Deuteranopia (green-blind)

#002655

Tritanopia (blue-blind)

#182C37

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #281f56;
/* rgb */ color: rgb(40, 31, 86);
/* oklch */ color: oklch(28.5% 0.095 286.1);

Tailwind

colors: {
  custom: {
    50: '#665b86',
    500: '#281f56',
    950: '#000000',
  },
}

SCSS

$custom: #281f56;
$custom-light: #665b86;
$custom-dark: #000000;

JSON

{
  "hex": "#281f56",
  "rgb": {
    "r": 40,
    "g": 31,
    "b": 86
  },
  "hsl": {
    "h": 249.818,
    "s": 47.009,
    "l": 22.941
  },
  "oklch": {
    "l": 0.28466,
    "c": 0.09548,
    "h": 286.1
  },
  "luminance": 0.02103
}

Semantic roles & 50–950 ramp

primary

#281F56

secondary

#808B46

accent

#D751C1

background

#F6F5F8

surface

#EBE9EF

border

#C6C5CA

text

#06040B

muted

#7A797C

Preview Lab

Preview with #281F56

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

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