#283A72#283A72

#283A72 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.5% C 0.099 H 267.9°. Best body text is #FFFFFF at 10.83:1 contrast (WCAG AA passes).

Color values

HEX	#283A72
RGB	rgb(40, 58, 114)
HSL	hsl(225, 48%, 30%)
HSV	hsv(225, 65%, 45%)
CMYK	cmyk(64.9%, 49.1%, 0%, 55.3%)
CIE-LAB	lab(25.84, 12.17, -34.57)
CIE-LCH	lch(25.84, 36.65, 289.39°)
OKLab	oklab(36.5% -0.0037 -0.0988)
OKLCH	oklch(36.5% 0.099 267.9)
XYZ	xyz(5.4244, 4.6917, 16.5361)
Luminance	0.0469 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283A72 #726028

analogous

#285F72 #283A72 #3B2872

triadic

#283A72 #72283A #3A7228

tetradic

#283A72 #72285F #726028 #28723B

square

#283A72 #72285F #726028 #28723B

split-complementary

#283A72 #723B28 #5F7228

monochromatic

#080C17 #182345 #283A72 #38519F #526DC2

Accessibility & contrast

On white

10.83

#283A72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#283A72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283A72

10.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283A72	#FFFFFF	#000000	##FFFFFF
##283A72	1.00	10.83	1.94	10.83
#FFFFFF	10.83	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E4174

Deuteranopia (green-blind)

#123A71

Tritanopia (blue-blind)

#004750

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #283a72;
/* rgb */ color: rgb(40, 58, 114);
/* oklch */ color: oklch(36.5% 0.099 267.9);

Tailwind

colors: {
  custom: {
    50: '#6a6f9b',
    500: '#283a72',
    950: '#000000',
  },
}

SCSS

$custom: #283a72;
$custom-light: #6a6f9b;
$custom-dark: #000000;

JSON

{
  "hex": "#283a72",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 114
  },
  "hsl": {
    "h": 225.405,
    "s": 48.052,
    "l": 30.196
  },
  "oklch": {
    "l": 0.36504,
    "c": 0.09887,
    "h": 267.9
  },
  "luminance": 0.04692
}

Semantic roles & 50–950 ramp

primary

#283A72

secondary

#A49052

accent

#B750D8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #283A72

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

Preview Lab → · Contrast checker → · Palette generator →