#283983#283983

#283983 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.6% C 0.126 H 269.6°. Best body text is #FFFFFF at 10.48:1 contrast (WCAG AA passes).

Color values

HEX	#283983
RGB	rgb(40, 57, 131)
HSL	hsl(229, 53%, 34%)
HSV	hsv(229, 69%, 51%)
CMYK	cmyk(69.5%, 56.5%, 0%, 48.6%)
CIE-LAB	lab(26.78, 19.38, -43.78)
CIE-LCH	lch(26.78, 47.87, 293.88°)
OKLab	oklab(37.61% -0.0008 -0.1259)
OKLCH	oklch(37.61% 0.126 269.6)
XYZ	xyz(6.4335, 5.0155, 22.0974)
Luminance	0.0502 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283983 #837228

analogous

#286683 #283983 #442883

triadic

#283983 #832839 #398328

tetradic

#283983 #832866 #837228 #288344

square

#283983 #832866 #837228 #288344

split-complementary

#283983 #834428 #668328

monochromatic

#0B1025 #1A2554 #283983 #364DB2 #596FCC

Accessibility & contrast

On white

10.48

#283983 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#283983 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283983

10.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283983	#FFFFFF	#000000	##FFFFFF
##283983	1.00	10.48	2.00	10.48
#FFFFFF	10.48	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004486

Deuteranopia (green-blind)

#003B82

Tritanopia (blue-blind)

#004B58

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #283983;
/* rgb */ color: rgb(40, 57, 131);
/* oklch */ color: oklch(37.6% 0.126 269.6);

Tailwind

colors: {
  custom: {
    50: '#6e6fa8',
    500: '#283983',
    950: '#000000',
  },
}

SCSS

$custom: #283983;
$custom-light: #6e6fa8;
$custom-dark: #000000;

JSON

{
  "hex": "#283983",
  "rgb": {
    "r": 40,
    "g": 57,
    "b": 131
  },
  "hsl": {
    "h": 228.791,
    "s": 53.216,
    "l": 33.529
  },
  "oklch": {
    "l": 0.3761,
    "c": 0.12589,
    "h": 269.6
  },
  "luminance": 0.05016
}

Semantic roles & 50–950 ramp

primary

#283983

secondary

#B1A055

accent

#C14BDD

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #283983

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

Preview Lab → · Contrast checker → · Palette generator →