#283B72#283B72

#283B72 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.7% C 0.097 H 267.2°. Best body text is #FFFFFF at 10.72:1 contrast (WCAG AA passes).

Color values

HEX	#283B72
RGB	rgb(40, 59, 114)
HSL	hsl(225, 48%, 30%)
HSV	hsv(225, 65%, 45%)
CMYK	cmyk(64.9%, 48.2%, 0%, 55.3%)
CIE-LAB	lab(26.14, 11.47, -34.09)
CIE-LCH	lch(26.14, 35.97, 288.60°)
OKLab	oklab(36.73% -0.0048 -0.0974)
OKLCH	oklch(36.73% 0.097 267.2)
XYZ	xyz(5.4753, 4.7935, 16.5530)
Luminance	0.0479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283B72 #725F28

analogous

#286072 #283B72 #3A2872

triadic

#283B72 #72283B #3B7228

tetradic

#283B72 #722860 #725F28 #28723A

square

#283B72 #722860 #725F28 #28723A

split-complementary

#283B72 #723A28 #607228

monochromatic

#080C17 #182445 #283B72 #38529F #526FC2

Accessibility & contrast

On white

10.72

#283B72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#283B72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283B72

10.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283B72	#FFFFFF	#000000	##FFFFFF
##283B72	1.00	10.72	1.96	10.72
#FFFFFF	10.72	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#204174

Deuteranopia (green-blind)

#143B71

Tritanopia (blue-blind)

#004751

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #283b72;
/* rgb */ color: rgb(40, 59, 114);
/* oklch */ color: oklch(36.7% 0.097 267.2);

Tailwind

colors: {
  custom: {
    50: '#6a709b',
    500: '#283b72',
    950: '#000000',
  },
}

SCSS

$custom: #283b72;
$custom-light: #6a709b;
$custom-dark: #000000;

JSON

{
  "hex": "#283b72",
  "rgb": {
    "r": 40,
    "g": 59,
    "b": 114
  },
  "hsl": {
    "h": 224.595,
    "s": 48.052,
    "l": 30.196
  },
  "oklch": {
    "l": 0.36734,
    "c": 0.09749,
    "h": 267.2
  },
  "luminance": 0.04794
}

Semantic roles & 50–950 ramp

primary

#283B72

secondary

#A48F52

accent

#B550D8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #283B72

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

Preview Lab → · Contrast checker → · Palette generator →