#283A68#283A68

#283A68 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 35.8% C 0.083 H 266.2°. Best body text is #FFFFFF at 11.08:1 contrast (WCAG AA passes).

Color values

HEX	#283A68
RGB	rgb(40, 58, 104)
HSL	hsl(223, 44%, 28%)
HSV	hsv(223, 62%, 41%)
CMYK	cmyk(61.5%, 44.2%, 0%, 59.2%)
CIE-LAB	lab(25.19, 8.38, -29.21)
CIE-LCH	lch(25.19, 30.39, 286.01°)
OKLab	oklab(35.8% -0.0055 -0.083)
OKLCH	oklch(35.8% 0.083 266.2)
XYZ	xyz(4.8860, 4.4763, 13.7006)
Luminance	0.0448 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283A68 #685628

analogous

#285A68 #283A68 #362868

triadic

#283A68 #68283A #3A6828

tetradic

#283A68 #68285A #685628 #286836

square

#283A68 #68285A #685628 #286836

split-complementary

#283A68 #683628 #5A6828

monochromatic

#090C16 #17213C #283A68 #395394 #4F6EBB

Accessibility & contrast

On white

11.08

#283A68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#283A68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283A68

11.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283A68	#FFFFFF	#000000	##FFFFFF
##283A68	1.00	11.08	1.90	11.08
#FFFFFF	11.08	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#263F6A

Deuteranopia (green-blind)

#1E3967

Tritanopia (blue-blind)

#00444C

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #283a68;
/* rgb */ color: rgb(40, 58, 104);
/* oklch */ color: oklch(35.8% 0.083 266.2);

Tailwind

colors: {
  custom: {
    50: '#686f93',
    500: '#283a68',
    950: '#000000',
  },
}

SCSS

$custom: #283a68;
$custom-light: #686f93;
$custom-dark: #000000;

JSON

{
  "hex": "#283a68",
  "rgb": {
    "r": 40,
    "g": 58,
    "b": 104
  },
  "hsl": {
    "h": 223.125,
    "s": 44.444,
    "l": 28.235
  },
  "oklch": {
    "l": 0.35795,
    "c": 0.08323,
    "h": 266.2
  },
  "luminance": 0.04477
}

Semantic roles & 50–950 ramp

primary

#283A68

secondary

#9B8651

accent

#B054D4

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #283A68

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

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