#283299#283299

#283299 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 38.2% C 0.166 H 271.5°. Best body text is #FFFFFF at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#283299
RGB	rgb(40, 50, 153)
HSL	hsl(235, 59%, 38%)
HSV	hsv(235, 74%, 60%)
CMYK	cmyk(73.9%, 67.3%, 0%, 40%)
CIE-LAB	lab(26.82, 32.36, -57.30)
CIE-LCH	lch(26.82, 65.81, 299.45°)
OKLab	oklab(38.23% 0.0044 -0.1657)
OKLCH	oklch(38.23% 0.166 271.5)
XYZ	xyz(7.7635, 5.0314, 30.6928)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283299 #998F28

analogous

#286B99 #283299 #562899

triadic

#283299 #992832 #329928

tetradic

#283299 #99286B #998F28 #289956

square

#283299 #99286B #998F28 #289956

split-complementary

#283299 #995628 #6B9928

monochromatic

#0F1238 #1B2268 #283299 #3542CA #656FD7

Accessibility & contrast

On white

10.47

#283299 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#283299 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283299

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283299	#FFFFFF	#000000	##FFFFFF
##283299	1.00	10.47	2.01	10.47
#FFFFFF	10.47	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00459C

Deuteranopia (green-blind)

#003A97

Tritanopia (blue-blind)

#004D61

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #283299;
/* rgb */ color: rgb(40, 50, 153);
/* oklch */ color: oklch(38.2% 0.166 271.5);

Tailwind

colors: {
  custom: {
    50: '#736ab8',
    500: '#283299',
    950: '#000000',
  },
}

SCSS

$custom: #283299;
$custom-light: #736ab8;
$custom-dark: #000000;

JSON

{
  "hex": "#283299",
  "rgb": {
    "r": 40,
    "g": 50,
    "b": 153
  },
  "hsl": {
    "h": 234.69,
    "s": 58.549,
    "l": 37.843
  },
  "oklch": {
    "l": 0.38228,
    "c": 0.16572,
    "h": 271.5
  },
  "luminance": 0.05032
}

Semantic roles & 50–950 ramp

primary

#283299

secondary

#BDB460

accent

#D446E2

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #283299

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

Preview Lab → · Contrast checker → · Palette generator →