#283F51#283F51

#283F51 is a dark, muted cyan. Relative luminance 0.046; OKLCH L 35.7% C 0.043 H 242.9°. Best body text is #FFFFFF at 10.94:1 contrast (WCAG AA passes).

Color values

HEX	#283F51
RGB	rgb(40, 63, 81)
HSL	hsl(206, 34%, 24%)
HSV	hsv(206, 51%, 32%)
CMYK	cmyk(50.6%, 22.2%, 0%, 68.2%)
CIE-LAB	lab(25.56, -3.27, -13.66)
CIE-LCH	lch(25.56, 14.04, 256.55°)
OKLab	oklab(35.68% -0.0194 -0.0379)
OKLCH	oklch(35.68% 0.043 242.9)
XYZ	xyz(4.1373, 4.5999, 8.4528)
Luminance	0.0460 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F51 #513A28

analogous

#28514E #283F51 #282A51

triadic

#283F51 #51283F #3F5128

tetradic

#283F51 #4E2851 #513A28 #2A5128

square

#283F51 #4E2851 #513A28 #2A5128

split-complementary

#283F51 #51282A #514E28

monochromatic

#0A1014 #141F28 #283F51 #3C5F7A #507FA3

Accessibility & contrast

On white

10.94

#283F51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#283F51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F51

10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F51	#FFFFFF	#000000	##FFFFFF
##283F51	1.00	10.94	1.92	10.94
#FFFFFF	10.94	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#373F52

Deuteranopia (green-blind)

#323B51

Tritanopia (blue-blind)

#164345

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #283f51;
/* rgb */ color: rgb(40, 63, 81);
/* oklch */ color: oklch(35.7% 0.043 242.9);

Tailwind

colors: {
  custom: {
    50: '#647482',
    500: '#283f51',
    950: '#000000',
  },
}

SCSS

$custom: #283f51;
$custom-light: #647482;
$custom-dark: #000000;

JSON

{
  "hex": "#283f51",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 81
  },
  "hsl": {
    "h": 206.341,
    "s": 33.884,
    "l": 23.725
  },
  "oklch": {
    "l": 0.35684,
    "c": 0.04262,
    "h": 242.9
  },
  "luminance": 0.046
}

Semantic roles & 50–950 ramp

primary

#283F51

secondary

#846751

accent

#8D5ECA

background

#F6F7F7

surface

#EBEDEE

border

#C6C8C9

text

#06080A

muted

#7A7B7C

Preview Lab

Preview with #283F51

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

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