#283D57#283D57

#283D57 is a dark, muted cyan. Relative luminance 0.045; OKLCH L 35.5% C 0.053 H 254.3°. Best body text is #FFFFFF at 11.08:1 contrast (WCAG AA passes).

Color values

HEX	#283D57
RGB	rgb(40, 61, 87)
HSL	hsl(213, 37%, 25%)
HSV	hsv(213, 54%, 34%)
CMYK	cmyk(54%, 29.9%, 0%, 65.9%)
CIE-LAB	lab(25.19, 0.12, -18.17)
CIE-LCH	lch(25.19, 18.17, 270.39°)
OKLab	oklab(35.48% -0.0143 -0.0509)
OKLCH	oklch(35.48% 0.053 254.3)
XYZ	xyz(4.2635, 4.4764, 9.6543)
Luminance	0.0448 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283D57 #574228

analogous

#285557 #283D57 #2A2857

triadic

#283D57 #57283D #3D5728

tetradic

#283D57 #572855 #574228 #28572A

square

#283D57 #572855 #574228 #28572A

split-complementary

#283D57 #572A28 #555728

monochromatic

#0A0F15 #15202D #283D57 #3B5A81 #4F78AB

Accessibility & contrast

On white

11.08

#283D57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#283D57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283D57

11.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283D57	#FFFFFF	#000000	##FFFFFF
##283D57	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)

#333E58

Deuteranopia (green-blind)

#2D3A56

Tritanopia (blue-blind)

#124346

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #283d57;
/* rgb */ color: rgb(40, 61, 87);
/* oklch */ color: oklch(35.5% 0.053 254.3);

Tailwind

colors: {
  custom: {
    50: '#657286',
    500: '#283d57',
    950: '#000000',
  },
}

SCSS

$custom: #283d57;
$custom-light: #657286;
$custom-dark: #000000;

JSON

{
  "hex": "#283d57",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 87
  },
  "hsl": {
    "h": 213.191,
    "s": 37.008,
    "l": 24.902
  },
  "oklch": {
    "l": 0.35483,
    "c": 0.05286,
    "h": 254.3
  },
  "luminance": 0.04477
}

Semantic roles & 50–950 ramp

primary

#283D57

secondary

#8A7051

accent

#9A5BCD

background

#F6F6F8

surface

#EBECEF

border

#C6C7CA

text

#06070B

muted

#7A7A7C

Preview Lab

Preview with #283D57

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

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