#283171#283171

#283171 is a dark, moderate blue. Relative luminance 0.038; OKLCH L 34.4% C 0.110 H 273.2°. Best body text is #FFFFFF at 11.88:1 contrast (WCAG AA passes).

Color values

HEX	#283171
RGB	rgb(40, 49, 113)
HSL	hsl(233, 48%, 30%)
HSV	hsv(233, 65%, 44%)
CMYK	cmyk(64.6%, 56.6%, 0%, 55.7%)
CIE-LAB	lab(23.13, 18.08, -38.29)
CIE-LCH	lch(23.13, 42.34, 295.28°)
OKLab	oklab(34.43% 0.0061 -0.1098)
OKLCH	oklch(34.43% 0.11 273.2)
XYZ	xyz(4.9530, 3.8396, 16.0997)
Luminance	0.0384 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283171 #716828

analogous

#285571 #283171 #442871

triadic

#283171 #712831 #317128

tetradic

#283171 #712855 #716828 #287144

square

#283171 #712855 #716828 #287144

split-complementary

#283171 #714428 #557128

monochromatic

#080A17 #181D44 #283171 #38459E #5260C2

Accessibility & contrast

On white

11.88

#283171 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#283171 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283171

11.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283171	#FFFFFF	#000000	##FFFFFF
##283171	1.00	11.88	1.77	11.88
#FFFFFF	11.88	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#063A73

Deuteranopia (green-blind)

#003470

Tritanopia (blue-blind)

#00404C

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #283171;
/* rgb */ color: rgb(40, 49, 113);
/* oklch */ color: oklch(34.4% 0.110 273.2);

Tailwind

colors: {
  custom: {
    50: '#6a689a',
    500: '#283171',
    950: '#000000',
  },
}

SCSS

$custom: #283171;
$custom-light: #6a689a;
$custom-dark: #000000;

JSON

{
  "hex": "#283171",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 113
  },
  "hsl": {
    "h": 232.603,
    "s": 47.712,
    "l": 30
  },
  "oklch": {
    "l": 0.34434,
    "c": 0.11002,
    "h": 273.2
  },
  "luminance": 0.0384
}

Semantic roles & 50–950 ramp

primary

#283171

secondary

#A39952

accent

#C750D7

background

#F6F6F9

surface

#ECEBF2

border

#C7C6CC

text

#07060E

muted

#7A7A7E

Preview Lab

Preview with #283171

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

Preview Lab → · Contrast checker → · Palette generator →