#42545C#42545C

#42545C is a dark, muted cyan. Relative luminance 0.083; OKLCH L 43.4% C 0.026 H 226.7°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#42545C
RGB	rgb(66, 84, 92)
HSL	hsl(198, 16%, 31%)
HSV	hsv(198, 28%, 36%)
CMYK	cmyk(28.3%, 8.7%, 0%, 63.9%)
CIE-LAB	lab(34.54, -4.85, -6.94)
CIE-LCH	lch(34.54, 8.46, 235.05°)
OKLab	oklab(43.38% -0.0178 -0.0189)
OKLCH	oklch(43.38% 0.026 226.7)
XYZ	xyz(7.3483, 8.2713, 11.3325)
Luminance	0.0827 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42545C #5C4A42

analogous

#425C57 #42545C #42475C

triadic

#42545C #5C4254 #545C42

tetradic

#42545C #57425C #5C4A42 #475C42

square

#42545C #57425C #5C4A42 #475C42

split-complementary

#42545C #5C4247 #5C5742

monochromatic

#0F1315 #283338 #42545C #5C7580 #79939F

Accessibility & contrast

On white

7.91

#42545C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#42545C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42545C

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42545C	#FFFFFF	#000000	##FFFFFF
##42545C	1.00	7.91	2.65	7.91
#FFFFFF	7.91	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#50535C

Deuteranopia (green-blind)

#4C505C

Tritanopia (blue-blind)

#3A5656

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #42545c;
/* rgb */ color: rgb(66, 84, 92);
/* oklch */ color: oklch(43.4% 0.026 226.7);

Tailwind

colors: {
  custom: {
    50: '#77848a',
    500: '#42545c',
    950: '#000000',
  },
}

SCSS

$custom: #42545c;
$custom-light: #77848a;
$custom-dark: #000000;

JSON

{
  "hex": "#42545c",
  "rgb": {
    "r": 66,
    "g": 84,
    "b": 92
  },
  "hsl": {
    "h": 198.462,
    "s": 16.456,
    "l": 30.98
  },
  "oklch": {
    "l": 0.4338,
    "c": 0.02595,
    "h": 226.7
  },
  "luminance": 0.08272
}

Semantic roles & 50–950 ramp

primary

#42545C

secondary

#8B776F

accent

#866FB9

background

#F7F8F8

surface

#EDEFF0

border

#C8CACB

text

#080A0B

muted

#7B7C7C

Preview Lab

Preview with #42545C

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

Preview Lab → · Contrast checker → · Palette generator →