#283D65#283D65

#283D65 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.3% C 0.075 H 262.3°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#283D65
RGB	rgb(40, 61, 101)
HSL	hsl(219, 43%, 28%)
HSV	hsv(219, 60%, 40%)
CMYK	cmyk(60.4%, 39.6%, 0%, 60.4%)
CIE-LAB	lab(25.94, 5.19, -26.07)
CIE-LCH	lch(25.94, 26.59, 281.26°)
OKLab	oklab(36.32% -0.01 -0.0738)
OKLCH	oklch(36.32% 0.075 262.3)
XYZ	xyz(4.8920, 4.7278, 12.9642)
Luminance	0.0473 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283D65 #655028

analogous

#285B65 #283D65 #312865

triadic

#283D65 #65283D #3D6528

tetradic

#283D65 #65285B #655028 #286531

square

#283D65 #65285B #655028 #286531

split-complementary

#283D65 #653128 #5B6528

monochromatic

#090D16 #172339 #283D65 #395791 #4E73B9

Accessibility & contrast

On white

10.79

#283D65 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#283D65 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283D65

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283D65	#FFFFFF	#000000	##FFFFFF
##283D65	1.00	10.79	1.95	10.79
#FFFFFF	10.79	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C4067

Deuteranopia (green-blind)

#253B64

Tritanopia (blue-blind)

#00464C

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #283d65;
/* rgb */ color: rgb(40, 61, 101);
/* oklch */ color: oklch(36.3% 0.075 262.3);

Tailwind

colors: {
  custom: {
    50: '#677291',
    500: '#283d65',
    950: '#000000',
  },
}

SCSS

$custom: #283d65;
$custom-light: #677291;
$custom-dark: #000000;

JSON

{
  "hex": "#283d65",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 101
  },
  "hsl": {
    "h": 219.344,
    "s": 43.262,
    "l": 27.647
  },
  "oklch": {
    "l": 0.36322,
    "c": 0.07451,
    "h": 262.3
  },
  "luminance": 0.04728
}

Semantic roles & 50–950 ramp

primary

#283D65

secondary

#987F51

accent

#A855D3

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #283D65

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

Preview Lab → · Contrast checker → · Palette generator →