#283887#283887

#283887 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 37.7% C 0.133 H 270.1°. Best body text is #FFFFFF at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#283887
RGB	rgb(40, 56, 135)
HSL	hsl(230, 54%, 34%)
HSV	hsv(230, 70%, 53%)
CMYK	cmyk(70.4%, 58.5%, 0%, 47.1%)
CIE-LAB	lab(26.81, 21.60, -46.21)
CIE-LCH	lch(26.81, 51.01, 295.05°)
OKLab	oklab(37.74% 0.0003 -0.1331)
OKLCH	oklch(37.74% 0.133 270.1)
XYZ	xyz(6.6609, 5.0281, 23.5365)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283887 #877728

analogous

#286887 #283887 #482887

triadic

#283887 #872838 #388728

tetradic

#283887 #872868 #877728 #288748

square

#283887 #872868 #877728 #288748

split-complementary

#283887 #874828 #688728

monochromatic

#0C1129 #1A2458 #283887 #364CB6 #5B6ECE

Accessibility & contrast

On white

10.47

#283887 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#283887 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283887

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283887	#FFFFFF	#000000	##FFFFFF
##283887	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)

#00448A

Deuteranopia (green-blind)

#003B85

Tritanopia (blue-blind)

#004B5A

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #283887;
/* rgb */ color: rgb(40, 56, 135);
/* oklch */ color: oklch(37.7% 0.133 270.1);

Tailwind

colors: {
  custom: {
    50: '#6f6eab',
    500: '#283887',
    950: '#000000',
  },
}

SCSS

$custom: #283887;
$custom-light: #6f6eab;
$custom-dark: #000000;

JSON

{
  "hex": "#283887",
  "rgb": {
    "r": 40,
    "g": 56,
    "b": 135
  },
  "hsl": {
    "h": 229.895,
    "s": 54.286,
    "l": 34.314
  },
  "oklch": {
    "l": 0.37736,
    "c": 0.13307,
    "h": 270.1
  },
  "luminance": 0.05029
}

Semantic roles & 50–950 ramp

primary

#283887

secondary

#B4A457

accent

#C54ADE

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #283887

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

Preview Lab → · Contrast checker → · Palette generator →