#42545F#42545F

#42545F is a dark, muted cyan. Relative luminance 0.083; OKLCH L 43.5% C 0.029 H 235.2°. Best body text is #FFFFFF at 7.88:1 contrast (WCAG AA passes).

Color values

HEX	#42545F
RGB	rgb(66, 84, 95)
HSL	hsl(203, 18%, 32%)
HSV	hsv(203, 31%, 37%)
CMYK	cmyk(30.5%, 11.6%, 0%, 62.7%)
CIE-LAB	lab(34.65, -4.03, -8.66)
CIE-LCH	lch(34.65, 9.55, 245.03°)
OKLab	oklab(43.5% -0.0165 -0.0237)
OKLCH	oklch(43.5% 0.029 235.2)
XYZ	xyz(7.4820, 8.3248, 12.0369)
Luminance	0.0833 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42545F #5F4D42

analogous

#425F5C #42545F #42465F

triadic

#42545F #5F4254 #545F42

tetradic

#42545F #5C425F #5F4D42 #465F42

square

#42545F #5C425F #5F4D42 #465F42

split-complementary

#42545F #5F4246 #5F5C42

monochromatic

#101417 #29343B #42545F #5B7483 #7993A2

Accessibility & contrast

On white

7.88

#42545F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#42545F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42545F

7.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42545F	#FFFFFF	#000000	##FFFFFF
##42545F	1.00	7.88	2.67	7.88
#FFFFFF	7.88	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F5360

Deuteranopia (green-blind)

#4B505F

Tritanopia (blue-blind)

#395757

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #42545f;
/* rgb */ color: rgb(66, 84, 95);
/* oklch */ color: oklch(43.5% 0.029 235.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#42545f",
  "rgb": {
    "r": 66,
    "g": 84,
    "b": 95
  },
  "hsl": {
    "h": 202.759,
    "s": 18.012,
    "l": 31.569
  },
  "oklch": {
    "l": 0.43502,
    "c": 0.02883,
    "h": 235.2
  },
  "luminance": 0.08325
}

Semantic roles & 50–950 ramp

primary

#42545F

secondary

#8E7B6E

accent

#8B6DBB

background

#F7F8F8

surface

#EDEFF0

border

#C8CACB

text

#080A0C

muted

#7B7C7D

Preview Lab

Preview with #42545F

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

Preview Lab → · Contrast checker → · Palette generator →