#283B68#283B68

#283B68 is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.0% C 0.082 H 265.3°. Best body text is #FFFFFF at 10.96:1 contrast (WCAG AA passes).

Color values

HEX	#283B68
RGB	rgb(40, 59, 104)
HSL	hsl(222, 44%, 28%)
HSV	hsv(222, 62%, 41%)
CMYK	cmyk(61.5%, 43.3%, 0%, 59.2%)
CIE-LAB	lab(25.50, 7.69, -28.71)
CIE-LCH	lch(25.50, 29.73, 284.99°)
OKLab	oklab(36.03% -0.0067 -0.0816)
OKLCH	oklch(36.03% 0.082 265.3)
XYZ	xyz(4.9369, 4.5781, 13.7175)
Luminance	0.0458 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283B68 #685528

analogous

#285B68 #283B68 #352868

triadic

#283B68 #68283B #3B6828

tetradic

#283B68 #68285B #685528 #286835

square

#283B68 #68285B #685528 #286835

split-complementary

#283B68 #683528 #5B6828

monochromatic

#090D16 #17223C #283B68 #395494 #4F6FBB

Accessibility & contrast

On white

10.96

#283B68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#283B68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283B68

10.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283B68	#FFFFFF	#000000	##FFFFFF
##283B68	1.00	10.96	1.92	10.96
#FFFFFF	10.96	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28406A

Deuteranopia (green-blind)

#1F3A67

Tritanopia (blue-blind)

#00454C

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #283b68;
/* rgb */ color: rgb(40, 59, 104);
/* oklch */ color: oklch(36.0% 0.082 265.3);

Tailwind

colors: {
  custom: {
    50: '#687093',
    500: '#283b68',
    950: '#000000',
  },
}

SCSS

$custom: #283b68;
$custom-light: #687093;
$custom-dark: #000000;

JSON

{
  "hex": "#283b68",
  "rgb": {
    "r": 40,
    "g": 59,
    "b": 104
  },
  "hsl": {
    "h": 222.188,
    "s": 44.444,
    "l": 28.235
  },
  "oklch": {
    "l": 0.36034,
    "c": 0.08187,
    "h": 265.3
  },
  "luminance": 0.04579
}

Semantic roles & 50–950 ramp

primary

#283B68

secondary

#9B8551

accent

#AE54D4

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #283B68

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

Preview Lab → · Contrast checker → · Palette generator →