#37545F#37545F

#37545F is a dark, muted cyan. Relative luminance 0.080; OKLCH L 42.8% C 0.039 H 223.7°. Best body text is #FFFFFF at 8.09:1 contrast (WCAG AA passes).

Color values

HEX	#37545F
RGB	rgb(55, 84, 95)
HSL	hsl(197, 27%, 29%)
HSV	hsv(197, 42%, 37%)
CMYK	cmyk(42.1%, 11.6%, 0%, 62.7%)
CIE-LAB	lab(33.94, -7.58, -9.80)
CIE-LCH	lch(33.94, 12.39, 232.30°)
OKLab	oklab(42.75% -0.0282 -0.027)
OKLCH	oklch(42.75% 0.039 223.7)
XYZ	xyz(6.8107, 7.9787, 12.0054)
Luminance	0.0798 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37545F #5F4237

analogous

#375F56 #37545F #37405F

triadic

#37545F #5F3754 #545F37

tetradic

#37545F #56375F #5F4237 #405F37

square

#37545F #56375F #5F4237 #405F37

split-complementary

#37545F #5F3740 #5F5637

monochromatic

#0B1113 #213238 #37545F #4D7686 #6996A8

Accessibility & contrast

On white

8.09

#37545F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#37545F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37545F

8.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37545F	#FFFFFF	#000000	##FFFFFF
##37545F	1.00	8.09	2.60	8.09
#FFFFFF	8.09	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E5360

Deuteranopia (green-blind)

#484E5F

Tritanopia (blue-blind)

#275757

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #37545f;
/* rgb */ color: rgb(55, 84, 95);
/* oklch */ color: oklch(42.8% 0.039 223.7);

Tailwind

colors: {
  custom: {
    50: '#70848c',
    500: '#37545f',
    950: '#000000',
  },
}

SCSS

$custom: #37545f;
$custom-light: #70848c;
$custom-dark: #000000;

JSON

{
  "hex": "#37545f",
  "rgb": {
    "r": 55,
    "g": 84,
    "b": 95
  },
  "hsl": {
    "h": 196.5,
    "s": 26.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.4275,
    "c": 0.03899,
    "h": 223.7
  },
  "luminance": 0.07979
}

Semantic roles & 50–950 ramp

primary

#37545F

secondary

#8F6F62

accent

#7F65C3

background

#F6F8F8

surface

#ECEFF0

border

#C7CACB

text

#070A0C

muted

#7A7C7D

Preview Lab

Preview with #37545F

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

Preview Lab → · Contrast checker → · Palette generator →