#37404C#37404C

#37404C is a dark, muted cyan. Relative luminance 0.050; OKLCH L 36.8% C 0.024 H 255.7°. Best body text is #FFFFFF at 10.50:1 contrast (WCAG AA passes).

Color values

HEX	#37404C
RGB	rgb(55, 64, 76)
HSL	hsl(214, 16%, 26%)
HSV	hsv(214, 28%, 30%)
CMYK	cmyk(27.6%, 15.8%, 0%, 70.2%)
CIE-LAB	lab(26.74, -0.52, -8.49)
CIE-LCH	lch(26.74, 8.51, 266.52°)
OKLab	oklab(36.82% -0.0059 -0.0232)
OKLCH	oklch(36.82% 0.024 255.7)
XYZ	xyz(4.7131, 5.0007, 7.5530)
Luminance	0.0500 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37404C #4C4337

analogous

#374A4C #37404C #38374C

triadic

#37404C #4C3740 #404C37

tetradic

#37404C #4C374A #4C4337 #374C38

square

#37404C #4C374A #4C4337 #374C38

split-complementary

#37404C #4C3837 #4A4C37

monochromatic

#0D0F12 #1D2228 #37404C #515E70 #6A7C93

Accessibility & contrast

On white

10.50

#37404C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#37404C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37404C

10.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37404C	#FFFFFF	#000000	##FFFFFF
##37404C	1.00	10.50	2.00	10.50
#FFFFFF	10.50	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C404D

Deuteranopia (green-blind)

#3A3E4C

Tritanopia (blue-blind)

#314344

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #37404c;
/* rgb */ color: rgb(55, 64, 76);
/* oklch */ color: oklch(36.8% 0.024 255.7);

Tailwind

colors: {
  custom: {
    50: '#6e747e',
    500: '#37404c',
    950: '#000000',
  },
}

SCSS

$custom: #37404c;
$custom-light: #6e747e;
$custom-dark: #000000;

JSON

{
  "hex": "#37404c",
  "rgb": {
    "r": 55,
    "g": 64,
    "b": 76
  },
  "hsl": {
    "h": 214.286,
    "s": 16.031,
    "l": 25.686
  },
  "oklch": {
    "l": 0.36815,
    "c": 0.02394,
    "h": 255.7
  },
  "luminance": 0.05001
}

Semantic roles & 50–950 ramp

primary

#37404C

secondary

#7C7163

accent

#996FB9

background

#F6F7F7

surface

#ECEDEE

border

#C7C8C9

text

#070809

muted

#7A7B7B

Preview Lab

Preview with #37404C

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

Preview Lab → · Contrast checker → · Palette generator →