#377D8D#377D8D

#377D8D is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.2% C 0.074 H 215.0°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#377D8D
RGB	rgb(55, 125, 141)
HSL	hsl(191, 44%, 38%)
HSV	hsv(191, 61%, 55%)
CMYK	cmyk(61%, 11.3%, 0%, 44.7%)
CIE-LAB	lab(48.76, -16.89, -15.27)
CIE-LCH	lch(48.76, 22.77, 222.11°)
OKLab	oklab(55.16% -0.0604 -0.0424)
OKLCH	oklch(55.16% 0.074 215)
XYZ	xyz(13.7149, 17.4012, 27.8301)
Luminance	0.1740 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#377D8D #8D4737

analogous

#378D72 #377D8D #37528D

triadic

#377D8D #8D377D #7D8D37

tetradic

#377D8D #72378D #8D4737 #528D37

square

#377D8D #72378D #8D4737 #528D37

split-complementary

#377D8D #8D3752 #8D7237

monochromatic

#152F35 #265661 #377D8D #49A3B8 #75BAC9

Accessibility & contrast

On white

4.69

#377D8D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#377D8D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #377D8D

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##377D8D	#FFFFFF	#000000	##FFFFFF
##377D8D	1.00	4.69	4.48	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#72798E

Deuteranopia (green-blind)

#65708D

Tritanopia (blue-blind)

#008382

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #377d8d;
/* rgb */ color: rgb(55, 125, 141);
/* oklch */ color: oklch(55.2% 0.074 215.0);

Tailwind

colors: {
  custom: {
    50: '#77a2ae',
    500: '#377d8d',
    950: '#000000',
  },
}

SCSS

$custom: #377d8d;
$custom-light: #77a2ae;
$custom-dark: #000000;

JSON

{
  "hex": "#377d8d",
  "rgb": {
    "r": 55,
    "g": 125,
    "b": 141
  },
  "hsl": {
    "h": 191.163,
    "s": 43.878,
    "l": 38.431
  },
  "oklch": {
    "l": 0.55164,
    "c": 0.07378,
    "h": 215
  },
  "luminance": 0.17403
}

Semantic roles & 50–950 ramp

primary

#377D8D

secondary

#B27A6E

accent

#6C54D4

background

#F7FAFA

surface

#EEF3F4

border

#C9CDCE

text

#090F10

muted

#7B7F7F

Preview Lab

Preview with #377D8D

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

Preview Lab → · Contrast checker → · Palette generator →