#283D72#283D72

#283D72 is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.2% C 0.095 H 265.7°. Best body text is #FFFFFF at 10.50:1 contrast (WCAG AA passes).

Color values

HEX	#283D72
RGB	rgb(40, 61, 114)
HSL	hsl(223, 48%, 30%)
HSV	hsv(223, 65%, 45%)
CMYK	cmyk(64.9%, 46.5%, 0%, 55.3%)
CIE-LAB	lab(26.74, 10.09, -33.12)
CIE-LCH	lch(26.74, 34.62, 286.94°)
OKLab	oklab(37.2% -0.007 -0.0945)
OKLCH	oklch(37.2% 0.095 265.7)
XYZ	xyz(5.5800, 5.0030, 16.5879)
Luminance	0.0500 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283D72 #725D28

analogous

#286272 #283D72 #382872

triadic

#283D72 #72283D #3D7228

tetradic

#283D72 #722862 #725D28 #287238

square

#283D72 #722862 #725D28 #287238

split-complementary

#283D72 #723828 #627228

monochromatic

#080D17 #182545 #283D72 #38559F #5272C2

Accessibility & contrast

On white

10.50

#283D72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#283D72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283D72

10.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283D72	#FFFFFF	#000000	##FFFFFF
##283D72	1.00	10.50	2.00	10.50
#FFFFFF	10.50	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244374

Deuteranopia (green-blind)

#193C71

Tritanopia (blue-blind)

#004952

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #283d72;
/* rgb */ color: rgb(40, 61, 114);
/* oklch */ color: oklch(37.2% 0.095 265.7);

Tailwind

colors: {
  custom: {
    50: '#6a729b',
    500: '#283d72',
    950: '#000000',
  },
}

SCSS

$custom: #283d72;
$custom-light: #6a729b;
$custom-dark: #000000;

JSON

{
  "hex": "#283d72",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 114
  },
  "hsl": {
    "h": 222.973,
    "s": 48.052,
    "l": 30.196
  },
  "oklch": {
    "l": 0.37197,
    "c": 0.09476,
    "h": 265.7
  },
  "luminance": 0.05004
}

Semantic roles & 50–950 ramp

primary

#283D72

secondary

#A48D52

accent

#B150D8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #283D72

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

Preview Lab → · Contrast checker → · Palette generator →