#283C69#283C69

#283C69 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.3% C 0.082 H 264.6°. Best body text is #FFFFFF at 10.82:1 contrast (WCAG AA passes).

Color values

HEX	#283C69
RGB	rgb(40, 60, 105)
HSL	hsl(222, 45%, 28%)
HSV	hsv(222, 62%, 41%)
CMYK	cmyk(61.9%, 42.9%, 0%, 58.8%)
CIE-LAB	lab(25.87, 7.37, -28.77)
CIE-LCH	lch(25.87, 29.70, 284.38°)
OKLab	oklab(36.34% -0.0077 -0.0817)
OKLCH	oklch(36.34% 0.082 264.6)
XYZ	xyz(5.0399, 4.7023, 14.0039)
Luminance	0.0470 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C69 #695528

analogous

#285C69 #283C69 #342869

triadic

#283C69 #69283C #3C6928

tetradic

#283C69 #69285C #695528 #286934

square

#283C69 #69285C #695528 #286934

split-complementary

#283C69 #693428 #5C6928

monochromatic

#080D16 #17233D #283C69 #395595 #4F71BC

Accessibility & contrast

On white

10.82

#283C69 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#283C69 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C69

10.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C69	#FFFFFF	#000000	##FFFFFF
##283C69	1.00	10.82	1.94	10.82
#FFFFFF	10.82	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#29406B

Deuteranopia (green-blind)

#203B68

Tritanopia (blue-blind)

#00464D

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #283c69;
/* rgb */ color: rgb(40, 60, 105);
/* oklch */ color: oklch(36.3% 0.082 264.6);

Tailwind

colors: {
  custom: {
    50: '#687194',
    500: '#283c69',
    950: '#000000',
  },
}

SCSS

$custom: #283c69;
$custom-light: #687194;
$custom-dark: #000000;

JSON

{
  "hex": "#283c69",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 105
  },
  "hsl": {
    "h": 221.538,
    "s": 44.828,
    "l": 28.431
  },
  "oklch": {
    "l": 0.36341,
    "c": 0.0821,
    "h": 264.6
  },
  "luminance": 0.04703
}

Semantic roles & 50–950 ramp

primary

#283C69

secondary

#9C8551

accent

#AD53D5

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #283C69

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

Preview Lab → · Contrast checker → · Palette generator →