#283D45#283D45

#283D45 is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.6% C 0.030 H 223.7°. Best body text is #FFFFFF at 11.39:1 contrast (WCAG AA passes).

Color values

HEX	#283D45
RGB	rgb(40, 61, 69)
HSL	hsl(197, 27%, 21%)
HSV	hsv(197, 42%, 27%)
CMYK	cmyk(42%, 11.6%, 0%, 72.9%)
CIE-LAB	lab(24.38, -5.86, -7.54)
CIE-LCH	lch(24.38, 9.55, 232.14°)
OKLab	oklab(34.58% -0.0217 -0.0207)
OKLCH	oklch(34.58% 0.03 223.7)
XYZ	xyz(3.6176, 4.2181, 6.2526)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283D45 #453028

analogous

#28453F #283D45 #282F45

triadic

#283D45 #45283D #3D4528

tetradic

#283D45 #3F2845 #453028 #2F4528

square

#283D45 #3F2845 #453028 #2F4528

split-complementary

#283D45 #45282F #453F28

monochromatic

#0B1113 #121B1E #283D45 #3E5F6C #558292

Accessibility & contrast

On white

11.39

#283D45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#283D45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283D45

11.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283D45	#FFFFFF	#000000	##FFFFFF
##283D45	1.00	11.39	1.84	11.39
#FFFFFF	11.39	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383C45

Deuteranopia (green-blind)

#343845

Tritanopia (blue-blind)

#1D403F

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #283d45;
/* rgb */ color: rgb(40, 61, 69);
/* oklch */ color: oklch(34.6% 0.030 223.7);

Tailwind

colors: {
  custom: {
    50: '#637278',
    500: '#283d45',
    950: '#000000',
  },
}

SCSS

$custom: #283d45;
$custom-light: #637278;
$custom-dark: #000000;

JSON

{
  "hex": "#283d45",
  "rgb": {
    "r": 40,
    "g": 61,
    "b": 69
  },
  "hsl": {
    "h": 196.552,
    "s": 26.606,
    "l": 21.373
  },
  "oklch": {
    "l": 0.34578,
    "c": 0.02997,
    "h": 223.7
  },
  "luminance": 0.04218
}

Semantic roles & 50–950 ramp

primary

#283D45

secondary

#775C52

accent

#7F65C3

background

#F6F6F7

surface

#EBECED

border

#C6C7C8

text

#050809

muted

#7A7B7B

Preview Lab

Preview with #283D45

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

Preview Lab → · Contrast checker → · Palette generator →