#283F53#283F53

#283F53 is a dark, muted cyan. Relative luminance 0.046; OKLCH L 35.8% C 0.045 H 245.7°. Best body text is #FFFFFF at 10.90:1 contrast (WCAG AA passes).

Color values

HEX	#283F53
RGB	rgb(40, 63, 83)
HSL	hsl(208, 35%, 24%)
HSV	hsv(208, 52%, 33%)
CMYK	cmyk(51.8%, 24.1%, 0%, 67.5%)
CIE-LAB	lab(25.65, -2.59, -14.83)
CIE-LCH	lch(25.65, 15.05, 260.10°)
OKLab	oklab(35.79% -0.0186 -0.0413)
OKLCH	oklch(35.79% 0.045 245.7)
XYZ	xyz(4.2134, 4.6304, 8.8537)
Luminance	0.0463 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F53 #533C28

analogous

#285352 #283F53 #282A53

triadic

#283F53 #53283F #3F5328

tetradic

#283F53 #522853 #533C28 #2A5328

square

#283F53 #522853 #533C28 #2A5328

split-complementary

#283F53 #53282A #535228

monochromatic

#0A1015 #14202A #283F53 #3C5E7C #507EA6

Accessibility & contrast

On white

10.90

#283F53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#283F53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F53

10.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F53	#FFFFFF	#000000	##FFFFFF
##283F53	1.00	10.90	1.93	10.90
#FFFFFF	10.90	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#373F54

Deuteranopia (green-blind)

#313B53

Tritanopia (blue-blind)

#154446

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #283f53;
/* rgb */ color: rgb(40, 63, 83);
/* oklch */ color: oklch(35.8% 0.045 245.7);

Tailwind

colors: {
  custom: {
    50: '#657383',
    500: '#283f53',
    950: '#000000',
  },
}

SCSS

$custom: #283f53;
$custom-light: #657383;
$custom-dark: #000000;

JSON

{
  "hex": "#283f53",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 83
  },
  "hsl": {
    "h": 207.907,
    "s": 34.959,
    "l": 24.118
  },
  "oklch": {
    "l": 0.35787,
    "c": 0.04529,
    "h": 245.7
  },
  "luminance": 0.04631
}

Semantic roles & 50–950 ramp

primary

#283F53

secondary

#866A51

accent

#905DCB

background

#F6F7F8

surface

#EBEDEF

border

#C6C8CA

text

#06080A

muted

#7A7B7C

Preview Lab

Preview with #283F53

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

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