#283D76#283D76

#283D76 is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.5% C 0.101 H 266.4°. Best body text is #FFFFFF at 10.40:1 contrast (WCAG AA passes).

Color values

HEX	#283D76
RGB	rgb(40, 61, 118)
HSL	hsl(224, 49%, 31%)
HSV	hsv(224, 66%, 46%)
CMYK	cmyk(66.1%, 48.3%, 0%, 53.7%)
CIE-LAB	lab(27.01, 11.62, -35.24)
CIE-LCH	lch(27.01, 37.10, 288.25°)
OKLab	oklab(37.48% -0.0063 -0.1007)
OKLCH	oklch(37.48% 0.101 266.4)
XYZ	xyz(5.8127, 5.0961, 17.8133)
Luminance	0.0510 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283D76 #766128

analogous

#286476 #283D76 #3A2876

triadic

#283D76 #76283D #3D7628

tetradic

#283D76 #762864 #766128 #28763A

square

#283D76 #762864 #766128 #28763A

split-complementary

#283D76 #763A28 #647628

monochromatic

#090E1B #192548 #283D76 #3755A4 #5472C5

Accessibility & contrast

On white

10.40

#283D76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#283D76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283D76

10.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283D76	#FFFFFF	#000000	##FFFFFF
##283D76	1.00	10.40	2.02	10.40
#FFFFFF	10.40	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#214478

Deuteranopia (green-blind)

#133C75

Tritanopia (blue-blind)

#004A53

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #283d76;
/* rgb */ color: rgb(40, 61, 118);
/* oklch */ color: oklch(37.5% 0.101 266.4);

Tailwind

colors: {
  custom: {
    50: '#6b729e',
    500: '#283d76',
    950: '#000000',
  },
}

SCSS

$custom: #283d76;
$custom-light: #6b729e;
$custom-dark: #000000;

JSON

{
  "hex": "#283d76",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 118
  },
  "hsl": {
    "h": 223.846,
    "s": 49.367,
    "l": 30.98
  },
  "oklch": {
    "l": 0.37484,
    "c": 0.10091,
    "h": 266.4
  },
  "luminance": 0.05097
}

Semantic roles & 50–950 ramp

primary

#283D76

secondary

#A89152

accent

#B44FD9

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #283D76

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

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