#42576B#42576B

#42576B is a dark, muted cyan. Relative luminance 0.090; OKLCH L 44.8% C 0.042 H 247.5°. Best body text is #FFFFFF at 7.48:1 contrast (WCAG AA passes).

Color values

HEX	#42576B
RGB	rgb(66, 87, 107)
HSL	hsl(209, 24%, 34%)
HSV	hsv(209, 38%, 42%)
CMYK	cmyk(38.3%, 18.7%, 0%, 58%)
CIE-LAB	lab(36.05, -2.47, -14.03)
CIE-LCH	lch(36.05, 14.25, 260.03°)
OKLab	oklab(44.76% -0.016 -0.0387)
OKLCH	oklch(44.76% 0.042 247.5)
XYZ	xyz(8.3080, 9.0358, 15.2134)
Luminance	0.0904 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42576B #6B5642

analogous

#426B6B #42576B #42436B

triadic

#42576B #6B4257 #576B42

tetradic

#42576B #6B426B #6B5642 #436B42

square

#42576B #6B426B #6B5642 #436B42

split-complementary

#42576B #6B4243 #6B6B42

monochromatic

#13191F #2B3845 #42576B #597691 #7A94AD

Accessibility & contrast

On white

7.48

#42576B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#42576B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42576B

7.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42576B	#FFFFFF	#000000	##FFFFFF
##42576B	1.00	7.48	2.81	7.48
#FFFFFF	7.48	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F576C

Deuteranopia (green-blind)

#4A536B

Tritanopia (blue-blind)

#345C5E

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #42576b;
/* rgb */ color: rgb(66, 87, 107);
/* oklch */ color: oklch(44.8% 0.042 247.5);

Tailwind

colors: {
  custom: {
    50: '#788695',
    500: '#42576b',
    950: '#000000',
  },
}

SCSS

$custom: #42576b;
$custom-light: #788695;
$custom-dark: #000000;

JSON

{
  "hex": "#42576b",
  "rgb": {
    "r": 66,
    "g": 87,
    "b": 107
  },
  "hsl": {
    "h": 209.268,
    "s": 23.699,
    "l": 33.922
  },
  "oklch": {
    "l": 0.44762,
    "c": 0.04189,
    "h": 247.5
  },
  "luminance": 0.09036
}

Semantic roles & 50–950 ramp

primary

#42576B

secondary

#998470

accent

#9368C0

background

#F7F8F9

surface

#EDEFF1

border

#C8CACB

text

#090B0D

muted

#7B7C7E

Preview Lab

Preview with #42576B

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

Preview Lab → · Contrast checker → · Palette generator →