#283C76#283C76

#283C76 is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.3% C 0.102 H 267.1°. Best body text is #FFFFFF at 10.51:1 contrast (WCAG AA passes).

Color values

HEX	#283C76
RGB	rgb(40, 60, 118)
HSL	hsl(225, 49%, 31%)
HSV	hsv(225, 66%, 46%)
CMYK	cmyk(66.1%, 49.2%, 0%, 53.7%)
CIE-LAB	lab(26.71, 12.31, -35.72)
CIE-LCH	lch(26.71, 37.78, 289.02°)
OKLab	oklab(37.26% -0.0052 -0.1021)
OKLCH	oklch(37.26% 0.102 267.1)
XYZ	xyz(5.7598, 4.9903, 17.7957)
Luminance	0.0499 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C76 #766228

analogous

#286376 #283C76 #3B2876

triadic

#283C76 #76283C #3C7628

tetradic

#283C76 #762863 #766228 #28763B

square

#283C76 #762863 #766228 #28763B

split-complementary

#283C76 #763B28 #637628

monochromatic

#090E1B #192548 #283C76 #3753A4 #5471C5

Accessibility & contrast

On white

10.51

#283C76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#283C76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C76

10.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C76	#FFFFFF	#000000	##FFFFFF
##283C76	1.00	10.51	2.00	10.51
#FFFFFF	10.51	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F4378

Deuteranopia (green-blind)

#103C75

Tritanopia (blue-blind)

#004953

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #283c76;
/* rgb */ color: rgb(40, 60, 118);
/* oklch */ color: oklch(37.3% 0.102 267.1);

Tailwind

colors: {
  custom: {
    50: '#6b719e',
    500: '#283c76',
    950: '#000000',
  },
}

SCSS

$custom: #283c76;
$custom-light: #6b719e;
$custom-dark: #000000;

JSON

{
  "hex": "#283c76",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 118
  },
  "hsl": {
    "h": 224.615,
    "s": 49.367,
    "l": 30.98
  },
  "oklch": {
    "l": 0.37255,
    "c": 0.10227,
    "h": 267.1
  },
  "luminance": 0.04991
}

Semantic roles & 50–950 ramp

primary

#283C76

secondary

#A89252

accent

#B64FD9

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #283C76

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

Preview Lab → · Contrast checker → · Palette generator →