#283571#283571

#283571 is a dark, moderate blue. Relative luminance 0.042; OKLCH L 35.3% C 0.104 H 271.0°. Best body text is #FFFFFF at 11.43:1 contrast (WCAG AA passes).

Color values

HEX	#283571
RGB	rgb(40, 53, 113)
HSL	hsl(229, 48%, 30%)
HSV	hsv(229, 65%, 44%)
CMYK	cmyk(64.6%, 53.1%, 0%, 55.7%)
CIE-LAB	lab(24.29, 15.28, -36.43)
CIE-LCH	lch(24.29, 39.50, 292.76°)
OKLab	oklab(35.3% 0.0018 -0.1043)
OKLCH	oklch(35.3% 0.104 271)
XYZ	xyz(5.1278, 4.1891, 16.1579)
Luminance	0.0419 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283571 #716428

analogous

#285971 #283571 #402871

triadic

#283571 #712835 #357128

tetradic

#283571 #712859 #716428 #287140

square

#283571 #712859 #716428 #287140

split-complementary

#283571 #714028 #597128

monochromatic

#080B17 #182044 #283571 #384A9E #5266C2

Accessibility & contrast

On white

11.43

#283571 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#283571 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283571

11.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283571	#FFFFFF	#000000	##FFFFFF
##283571	1.00	11.43	1.84	11.43
#FFFFFF	11.43	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#143D73

Deuteranopia (green-blind)

#033770

Tritanopia (blue-blind)

#00434D

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #283571;
/* rgb */ color: rgb(40, 53, 113);
/* oklch */ color: oklch(35.3% 0.104 271.0);

Tailwind

colors: {
  custom: {
    50: '#6a6b9a',
    500: '#283571',
    950: '#000000',
  },
}

SCSS

$custom: #283571;
$custom-light: #6a6b9a;
$custom-dark: #000000;

JSON

{
  "hex": "#283571",
  "rgb": {
    "r": 40,
    "g": 53,
    "b": 113
  },
  "hsl": {
    "h": 229.315,
    "s": 47.712,
    "l": 30
  },
  "oklch": {
    "l": 0.35303,
    "c": 0.10433,
    "h": 271
  },
  "luminance": 0.0419
}

Semantic roles & 50–950 ramp

primary

#283571

secondary

#A39552

accent

#BF50D7

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07060E

muted

#7A7A7E

Preview Lab

Preview with #283571

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

Preview Lab → · Contrast checker → · Palette generator →