#283BAA#283BAA

#283BAA is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.5% C 0.178 H 269.2°. Best body text is #FFFFFF at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#283BAA
RGB	rgb(40, 59, 170)
HSL	hsl(231, 62%, 41%)
HSV	hsv(231, 76%, 67%)
CMYK	cmyk(76.5%, 65.3%, 0%, 33.3%)
CIE-LAB	lab(30.59, 32.76, -61.41)
CIE-LCH	lch(30.59, 69.61, 298.08°)
OKLab	oklab(41.46% -0.0024 -0.1776)
OKLCH	oklch(41.46% 0.178 269.2)
XYZ	xyz(9.6922, 6.4803, 38.7624)
Luminance	0.0648 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283BAA #AA9728

analogous

#287CAA #283BAA #5628AA

triadic

#283BAA #AA283B #3BAA28

tetradic

#283BAA #AA287C #AA9728 #28AA56

square

#283BAA #AA287C #AA9728 #28AA56

split-complementary

#283BAA #AA5628 #7CAA28

monochromatic

#111947 #1C2A78 #283BAA #3E53D2 #6F7FDD

Accessibility & contrast

On white

9.15

#283BAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#283BAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283BAA

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283BAA	#FFFFFF	#000000	##FFFFFF
##283BAA	1.00	9.15	2.30	9.15
#FFFFFF	9.15	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAE

Deuteranopia (green-blind)

#0042A8

Tritanopia (blue-blind)

#00586D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #283baa;
/* rgb */ color: rgb(40, 59, 170);
/* oklch */ color: oklch(41.5% 0.178 269.2);

Tailwind

colors: {
  custom: {
    50: '#7771c4',
    500: '#283baa',
    950: '#000000',
  },
}

SCSS

$custom: #283baa;
$custom-light: #7771c4;
$custom-dark: #000000;

JSON

{
  "hex": "#283baa",
  "rgb": {
    "r": 40,
    "g": 59,
    "b": 170
  },
  "hsl": {
    "h": 231.231,
    "s": 61.905,
    "l": 41.176
  },
  "oklch": {
    "l": 0.41464,
    "c": 0.17766,
    "h": 269.2
  },
  "luminance": 0.06481
}

Semantic roles & 50–950 ramp

primary

#283BAA

secondary

#C4B76A

accent

#CD43E5

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #283BAA

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

Preview Lab → · Contrast checker → · Palette generator →