#283D7D#283D7D

#283D7D is a dark, moderate blue. Relative luminance 0.053; OKLCH L 38.0% C 0.112 H 267.3°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#283D7D
RGB	rgb(40, 61, 125)
HSL	hsl(225, 52%, 32%)
HSV	hsv(225, 68%, 49%)
CMYK	cmyk(68%, 51.2%, 0%, 51%)
CIE-LAB	lab(27.49, 14.31, -38.87)
CIE-LCH	lch(27.49, 41.42, 290.21°)
OKLab	oklab(38.01% -0.0053 -0.1114)
OKLCH	oklch(38.01% 0.112 267.3)
XYZ	xyz(6.2442, 5.2687, 20.0860)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283D7D #7D6828

analogous

#28687D #283D7D #3D287D

triadic

#283D7D #7D283D #3D7D28

tetradic

#283D7D #7D2868 #7D6828 #287D3D

square

#283D7D #7D2868 #7D6828 #287D3D

split-complementary

#283D7D #7D3D28 #687D28

monochromatic

#0A1020 #19264F #283D7D #3754AB #5673C9

Accessibility & contrast

On white

10.22

#283D7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#283D7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283D7D

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283D7D	#FFFFFF	#000000	##FFFFFF
##283D7D	1.00	10.22	2.05	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A457F

Deuteranopia (green-blind)

#043D7C

Tritanopia (blue-blind)

#004C57

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #283d7d;
/* rgb */ color: rgb(40, 61, 125);
/* oklch */ color: oklch(38.0% 0.112 267.3);

Tailwind

colors: {
  custom: {
    50: '#6c72a3',
    500: '#283d7d',
    950: '#000000',
  },
}

SCSS

$custom: #283d7d;
$custom-light: #6c72a3;
$custom-dark: #000000;

JSON

{
  "hex": "#283d7d",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 125
  },
  "hsl": {
    "h": 225.176,
    "s": 51.515,
    "l": 32.353
  },
  "oklch": {
    "l": 0.38005,
    "c": 0.11154,
    "h": 267.3
  },
  "luminance": 0.05269
}

Semantic roles & 50–950 ramp

primary

#283D7D

secondary

#AE9753

accent

#B84DDB

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #283D7D

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

Preview Lab → · Contrast checker → · Palette generator →