#283B85#283B85

#283B85 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.2% C 0.126 H 268.8°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#283B85
RGB	rgb(40, 59, 133)
HSL	hsl(228, 54%, 34%)
HSV	hsv(228, 70%, 52%)
CMYK	cmyk(69.9%, 55.6%, 0%, 47.8%)
CIE-LAB	lab(27.50, 18.77, -43.86)
CIE-LCH	lch(27.50, 47.71, 293.16°)
OKLab	oklab(38.2% -0.0025 -0.1261)
OKLCH	oklch(38.2% 0.126 268.8)
XYZ	xyz(6.6712, 5.2719, 22.8517)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283B85 #857228

analogous

#286A85 #283B85 #442885

triadic

#283B85 #85283B #3B8528

tetradic

#283B85 #85286A #857228 #288544

square

#283B85 #85286A #857228 #288544

split-complementary

#283B85 #854428 #6A8528

monochromatic

#0C1127 #1A2656 #283B85 #3650B4 #5A72CD

Accessibility & contrast

On white

10.22

#283B85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#283B85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283B85

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283B85	#FFFFFF	#000000	##FFFFFF
##283B85	1.00	10.22	2.05	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#044588

Deuteranopia (green-blind)

#003D84

Tritanopia (blue-blind)

#004D5A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #283b85;
/* rgb */ color: rgb(40, 59, 133);
/* oklch */ color: oklch(38.2% 0.126 268.8);

Tailwind

colors: {
  custom: {
    50: '#6e70a9',
    500: '#283b85',
    950: '#000000',
  },
}

SCSS

$custom: #283b85;
$custom-light: #6e70a9;
$custom-dark: #000000;

JSON

{
  "hex": "#283b85",
  "rgb": {
    "r": 40,
    "g": 59,
    "b": 133
  },
  "hsl": {
    "h": 227.742,
    "s": 53.757,
    "l": 33.922
  },
  "oklch": {
    "l": 0.38198,
    "c": 0.12615,
    "h": 268.8
  },
  "luminance": 0.05273
}

Semantic roles & 50–950 ramp

primary

#283B85

secondary

#B3A056

accent

#BF4BDD

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #283B85

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

Preview Lab → · Contrast checker → · Palette generator →