#28303A#28303A

#28303A is a dark, muted cyan. Relative luminance 0.029; OKLCH L 30.6% C 0.021 H 254.2°. Best body text is #FFFFFF at 13.34:1 contrast (WCAG AA passes).

Color values

HEX	#28303A
RGB	rgb(40, 48, 58)
HSL	hsl(213, 18%, 19%)
HSV	hsv(213, 31%, 23%)
CMYK	cmyk(31%, 17.2%, 0%, 77.3%)
CIE-LAB	lab(19.52, -0.61, -7.47)
CIE-LCH	lch(19.52, 7.49, 265.30°)
OKLab	oklab(30.59% -0.0058 -0.0204)
OKLCH	oklch(30.59% 0.021 254.2)
XYZ	xyz(2.6955, 2.8704, 4.4142)
Luminance	0.0287 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28303A #3A3228

analogous

#28393A #28303A #29283A

triadic

#28303A #3A2830 #303A28

tetradic

#28303A #3A2839 #3A3228 #283A29

square

#28303A #3A2839 #3A3228 #283A29

split-complementary

#28303A #3A2928 #393A28

monochromatic

#0C0F12 #0F1216 #28303A #414E5E #5A6C82

Accessibility & contrast

On white

13.34

#28303A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#28303A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28303A

13.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28303A	#FFFFFF	#000000	##FFFFFF
##28303A	1.00	13.34	1.57	13.34
#FFFFFF	13.34	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C303A

Deuteranopia (green-blind)

#2A2E3A

Tritanopia (blue-blind)

#233233

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #28303a;
/* rgb */ color: rgb(40, 48, 58);
/* oklch */ color: oklch(30.6% 0.021 254.2);

Tailwind

colors: {
  custom: {
    50: '#626870',
    500: '#28303a',
    950: '#000000',
  },
}

SCSS

$custom: #28303a;
$custom-light: #626870;
$custom-dark: #000000;

JSON

{
  "hex": "#28303a",
  "rgb": {
    "r": 40,
    "g": 48,
    "b": 58
  },
  "hsl": {
    "h": 213.333,
    "s": 18.367,
    "l": 19.216
  },
  "oklch": {
    "l": 0.30588,
    "c": 0.02124,
    "h": 254.2
  },
  "luminance": 0.02871
}

Semantic roles & 50–950 ramp

primary

#28303A

secondary

#6B6053

accent

#986DBB

background

#F5F6F6

surface

#EAEBEC

border

#C6C6C7

text

#050607

muted

#797A7A

Preview Lab

Preview with #28303A

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

Preview Lab → · Contrast checker → · Palette generator →