#283889#283889

#283889 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.9% C 0.136 H 270.1°. Best body text is #FFFFFF at 10.41:1 contrast (WCAG AA passes).

Color values

HEX	#283889
RGB	rgb(40, 56, 137)
HSL	hsl(230, 55%, 35%)
HSV	hsv(230, 71%, 54%)
CMYK	cmyk(70.8%, 59.1%, 0%, 46.3%)
CIE-LAB	lab(26.98, 22.36, -47.19)
CIE-LCH	lch(26.98, 52.22, 295.35°)
OKLab	oklab(37.91% 0.0004 -0.136)
OKLCH	oklch(37.91% 0.136 270.1)
XYZ	xyz(6.8031, 5.0849, 24.2850)
Luminance	0.0509 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283889 #897928

analogous

#286989 #283889 #492889

triadic

#283889 #892838 #388928

tetradic

#283889 #892869 #897928 #288949

square

#283889 #892869 #897928 #288949

split-complementary

#283889 #894928 #698928

monochromatic

#0C112A #1A255A #283889 #364BB8 #5C6FCF

Accessibility & contrast

On white

10.41

#283889 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#283889 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283889

10.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283889	#FFFFFF	#000000	##FFFFFF
##283889	1.00	10.41	2.02	10.41
#FFFFFF	10.41	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00448C

Deuteranopia (green-blind)

#003B87

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #283889;
/* rgb */ color: rgb(40, 56, 137);
/* oklch */ color: oklch(37.9% 0.136 270.1);

Tailwind

colors: {
  custom: {
    50: '#6f6eac',
    500: '#283889',
    950: '#000000',
  },
}

SCSS

$custom: #283889;
$custom-light: #6f6eac;
$custom-dark: #000000;

JSON

{
  "hex": "#283889",
  "rgb": {
    "r": 40,
    "g": 56,
    "b": 137
  },
  "hsl": {
    "h": 230.103,
    "s": 54.802,
    "l": 34.706
  },
  "oklch": {
    "l": 0.37907,
    "c": 0.13596,
    "h": 270.1
  },
  "luminance": 0.05086
}

Semantic roles & 50–950 ramp

primary

#283889

secondary

#B5A558

accent

#C64ADE

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #283889

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

Preview Lab → · Contrast checker → · Palette generator →