#283C6A#283C6A

#283C6A is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.4% C 0.084 H 264.9°. Best body text is #FFFFFF at 10.80:1 contrast (WCAG AA passes).

Color values

HEX	#283C6A
RGB	rgb(40, 60, 106)
HSL	hsl(222, 45%, 29%)
HSV	hsv(222, 62%, 42%)
CMYK	cmyk(62.3%, 43.4%, 0%, 58.4%)
CIE-LAB	lab(25.93, 7.75, -29.31)
CIE-LCH	lch(25.93, 30.32, 284.81°)
OKLab	oklab(36.41% -0.0075 -0.0833)
OKLCH	oklch(36.41% 0.084 264.9)
XYZ	xyz(5.0916, 4.7230, 14.2762)
Luminance	0.0472 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283C6A #6A5628

analogous

#285D6A #283C6A #35286A

triadic

#283C6A #6A283C #3C6A28

tetradic

#283C6A #6A285D #6A5628 #286A35

square

#283C6A #6A285D #6A5628 #286A35

split-complementary

#283C6A #6A3528 #5D6A28

monochromatic

#080D16 #17233E #283C6A #395596 #5071BD

Accessibility & contrast

On white

10.80

#283C6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#283C6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283C6A

10.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283C6A	#FFFFFF	#000000	##FFFFFF
##283C6A	1.00	10.80	1.94	10.80
#FFFFFF	10.80	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28416C

Deuteranopia (green-blind)

#1F3B69

Tritanopia (blue-blind)

#00464D

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #283c6a;
/* rgb */ color: rgb(40, 60, 106);
/* oklch */ color: oklch(36.4% 0.084 264.9);

Tailwind

colors: {
  custom: {
    50: '#687195',
    500: '#283c6a',
    950: '#000000',
  },
}

SCSS

$custom: #283c6a;
$custom-light: #687195;
$custom-dark: #000000;

JSON

{
  "hex": "#283c6a",
  "rgb": {
    "r": 40,
    "g": 60,
    "b": 106
  },
  "hsl": {
    "h": 221.818,
    "s": 45.205,
    "l": 28.627
  },
  "oklch": {
    "l": 0.36408,
    "c": 0.08367,
    "h": 264.9
  },
  "luminance": 0.04723
}

Semantic roles & 50–950 ramp

primary

#283C6A

secondary

#9D8651

accent

#AE53D5

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #283C6A

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

Preview Lab → · Contrast checker → · Palette generator →