#378B9D#378B9D

#378B9D is a mid, moderate cyan. Relative luminance 0.217; OKLCH L 59.3% C 0.084 H 214.3°. Best body text is #000000 at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#378B9D
RGB	rgb(55, 139, 157)
HSL	hsl(191, 48%, 42%)
HSV	hsv(191, 65%, 62%)
CMYK	cmyk(65%, 11.5%, 0%, 38.4%)
CIE-LAB	lab(53.72, -19.40, -17.05)
CIE-LCH	lch(53.72, 25.82, 221.32°)
OKLab	oklab(59.34% -0.0694 -0.0474)
OKLCH	oklch(59.34% 0.084 214.3)
XYZ	xyz(16.8915, 21.7100, 35.1920)
Luminance	0.2171 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378B9D #9D4937

analogous

#379D7C #378B9D #37589D

triadic

#378B9D #9D378B #8B9D37

tetradic

#378B9D #7C379D #9D4937 #589D37

square

#378B9D #7C379D #9D4937 #589D37

split-complementary

#378B9D #9D3758 #9D7C37

monochromatic

#173B42 #276370 #378B9D #50ADC2 #7DC3D1

Accessibility & contrast

On white

3.93

#378B9D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.34

#378B9D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378B9D

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378B9D	#FFFFFF	#000000	##000000
##378B9D	1.00	3.93	5.34	5.34
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.34	21.00	1.00	1.00
##000000	5.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E879E

Deuteranopia (green-blind)

#6F7C9D

Tritanopia (blue-blind)

#009291

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #378b9d;
/* rgb */ color: rgb(55, 139, 157);
/* oklch */ color: oklch(59.3% 0.084 214.3);

Tailwind

colors: {
  custom: {
    50: '#7aadba',
    500: '#378b9d',
    950: '#000000',
  },
}

SCSS

$custom: #378b9d;
$custom-light: #7aadba;
$custom-dark: #000000;

JSON

{
  "hex": "#378b9d",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 157
  },
  "hsl": {
    "h": 190.588,
    "s": 48.113,
    "l": 41.569
  },
  "oklch": {
    "l": 0.59338,
    "c": 0.08401,
    "h": 214.3
  },
  "luminance": 0.21712
}

Semantic roles & 50–950 ramp

primary

#378B9D

secondary

#BB8175

accent

#6850D8

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A1011

muted

#7C7F80

Preview Lab

Preview with #378B9D

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

Preview Lab → · Contrast checker → · Palette generator →