#374F66#374F66

#374F66 is a dark, muted cyan. Relative luminance 0.074; OKLCH L 41.8% C 0.049 H 248.0°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#374F66
RGB	rgb(55, 79, 102)
HSL	hsl(209, 30%, 31%)
HSV	hsv(209, 46%, 40%)
CMYK	cmyk(46.1%, 22.5%, 0%, 60%)
CIE-LAB	lab(32.62, -2.32, -16.23)
CIE-LCH	lch(32.62, 16.39, 261.88°)
OKLab	oklab(41.8% -0.0182 -0.0451)
OKLCH	oklch(41.8% 0.049 248)
XYZ	xyz(6.7690, 7.3631, 13.6323)
Luminance	0.0736 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#374F66 #664E37

analogous

#376665 #374F66 #373766

triadic

#374F66 #66374F #4F6637

tetradic

#374F66 #653766 #664E37 #376637

square

#374F66 #653766 #664E37 #376637

split-complementary

#374F66 #663737 #666537

monochromatic

#0C1116 #22303E #374F66 #4C6E8E #698CAE

Accessibility & contrast

On white

8.49

#374F66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#374F66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #374F66

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##374F66	#FFFFFF	#000000	##FFFFFF
##374F66	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#464F67

Deuteranopia (green-blind)

#404B66

Tritanopia (blue-blind)

#255457

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #374f66;
/* rgb */ color: rgb(55, 79, 102);
/* oklch */ color: oklch(41.8% 0.049 248.0);

Tailwind

colors: {
  custom: {
    50: '#708091',
    500: '#374f66',
    950: '#000000',
  },
}

SCSS

$custom: #374f66;
$custom-light: #708091;
$custom-dark: #000000;

JSON

{
  "hex": "#374f66",
  "rgb": {
    "r": 55,
    "g": 79,
    "b": 102
  },
  "hsl": {
    "h": 209.362,
    "s": 29.936,
    "l": 30.784
  },
  "oklch": {
    "l": 0.41802,
    "c": 0.0486,
    "h": 248
  },
  "luminance": 0.07363
}

Semantic roles & 50–950 ramp

primary

#374F66

secondary

#967C62

accent

#9362C6

background

#F6F7F8

surface

#ECEEF0

border

#C7C9CB

text

#080A0C

muted

#7B7C7D

Preview Lab

Preview with #374F66

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

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