#283B86#283B86

#283B86 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.3% C 0.128 H 268.9°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#283B86
RGB	rgb(40, 59, 134)
HSL	hsl(228, 54%, 34%)
HSV	hsv(228, 70%, 53%)
CMYK	cmyk(70.1%, 56%, 0%, 47.5%)
CIE-LAB	lab(27.57, 19.15, -44.36)
CIE-LCH	lch(27.57, 48.32, 293.35°)
OKLab	oklab(38.28% -0.0025 -0.1276)
OKLCH	oklch(38.28% 0.128 268.9)
XYZ	xyz(6.7406, 5.2996, 23.2173)
Luminance	0.0530 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283B86 #867328

analogous

#286A86 #283B86 #442886

triadic

#283B86 #86283B #3B8628

tetradic

#283B86 #86286A #867328 #288644

square

#283B86 #86286A #867328 #288644

split-complementary

#283B86 #864428 #6A8628

monochromatic

#0C1128 #1A2657 #283B86 #3650B5 #5B72CE

Accessibility & contrast

On white

10.19

#283B86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#283B86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283B86

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283B86	#FFFFFF	#000000	##FFFFFF
##283B86	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#014689

Deuteranopia (green-blind)

#003D84

Tritanopia (blue-blind)

#004D5A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #283b86;
/* rgb */ color: rgb(40, 59, 134);
/* oklch */ color: oklch(38.3% 0.128 268.9);

Tailwind

colors: {
  custom: {
    50: '#6e70aa',
    500: '#283b86',
    950: '#000000',
  },
}

SCSS

$custom: #283b86;
$custom-light: #6e70aa;
$custom-dark: #000000;

JSON

{
  "hex": "#283b86",
  "rgb": {
    "r": 40,
    "g": 59,
    "b": 134
  },
  "hsl": {
    "h": 227.872,
    "s": 54.023,
    "l": 34.118
  },
  "oklch": {
    "l": 0.3828,
    "c": 0.12761,
    "h": 268.9
  },
  "luminance": 0.053
}

Semantic roles & 50–950 ramp

primary

#283B86

secondary

#B3A057

accent

#C04ADD

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #283B86

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

Preview Lab → · Contrast checker → · Palette generator →