#377E8F#377E8F

#377E8F is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.5% C 0.075 H 215.9°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#377E8F
RGB	rgb(55, 126, 143)
HSL	hsl(192, 44%, 39%)
HSV	hsv(192, 62%, 56%)
CMYK	cmyk(61.5%, 11.9%, 0%, 43.9%)
CIE-LAB	lab(49.15, -16.81, -15.85)
CIE-LCH	lch(49.15, 23.10, 223.33°)
OKLab	oklab(55.5% -0.0607 -0.044)
OKLCH	oklch(55.5% 0.075 215.9)
XYZ	xyz(13.9923, 17.7157, 28.6633)
Luminance	0.1772 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377E8F #8F4837

analogous

#378F74 #377E8F #37528F

triadic

#377E8F #8F377E #7E8F37

tetradic

#377E8F #74378F #8F4837 #528F37

square

#377E8F #74378F #8F4837 #528F37

split-complementary

#377E8F #8F3752 #8F7437

monochromatic

#153037 #265763 #377E8F #4AA4B9 #76BACA

Accessibility & contrast

On white

4.62

#377E8F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#377E8F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #377E8F

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377E8F	#FFFFFF	#000000	##FFFFFF
##377E8F	1.00	4.62	4.54	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#727A90

Deuteranopia (green-blind)

#65718F

Tritanopia (blue-blind)

#008483

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #377e8f;
/* rgb */ color: rgb(55, 126, 143);
/* oklch */ color: oklch(55.5% 0.075 215.9);

Tailwind

colors: {
  custom: {
    50: '#77a3af',
    500: '#377e8f',
    950: '#000000',
  },
}

SCSS

$custom: #377e8f;
$custom-light: #77a3af;
$custom-dark: #000000;

JSON

{
  "hex": "#377e8f",
  "rgb": {
    "r": 55,
    "g": 126,
    "b": 143
  },
  "hsl": {
    "h": 191.591,
    "s": 44.444,
    "l": 38.824
  },
  "oklch": {
    "l": 0.555,
    "c": 0.07498,
    "h": 215.9
  },
  "luminance": 0.17717
}

Semantic roles & 50–950 ramp

primary

#377E8F

secondary

#B37C6F

accent

#6C54D4

background

#F7FAFA

surface

#EEF3F4

border

#C9CDCE

text

#090F10

muted

#7B7F7F

Preview Lab

Preview with #377E8F

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

Preview Lab → · Contrast checker → · Palette generator →