#378DA3#378DA3

#378DA3 is a mid, moderate cyan. Relative luminance 0.225; OKLCH L 60.1% C 0.087 H 217.8°. Best body text is #000000 at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#378DA3
RGB	rgb(55, 141, 163)
HSL	hsl(192, 50%, 43%)
HSV	hsv(192, 66%, 64%)
CMYK	cmyk(66.3%, 13.5%, 0%, 36.1%)
CIE-LAB	lab(54.56, -18.56, -19.23)
CIE-LCH	lch(54.56, 26.72, 226.02°)
OKLab	oklab(60.09% -0.0691 -0.0535)
OKLCH	oklch(60.09% 0.087 217.8)
XYZ	xyz(17.7086, 22.5044, 38.0537)
Luminance	0.2251 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378DA3 #A34D37

analogous

#37A383 #378DA3 #3757A3

triadic

#378DA3 #A3378D #8DA337

tetradic

#378DA3 #8337A3 #A34D37 #57A337

square

#378DA3 #8337A3 #A34D37 #57A337

split-complementary

#378DA3 #A33757 #A38337

monochromatic

#183E47 #286575 #378DA3 #52ADC5 #80C3D4

Accessibility & contrast

On white

3.82

#378DA3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.50

#378DA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378DA3

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378DA3	#FFFFFF	#000000	##000000
##378DA3	1.00	3.82	5.50	5.50
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.50	21.00	1.00	1.00
##000000	5.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F89A4

Deuteranopia (green-blind)

#6F7EA3

Tritanopia (blue-blind)

#009594

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #378da3;
/* rgb */ color: rgb(55, 141, 163);
/* oklch */ color: oklch(60.1% 0.087 217.8);

Tailwind

colors: {
  custom: {
    50: '#7baebe',
    500: '#378da3',
    950: '#000000',
  },
}

SCSS

$custom: #378da3;
$custom-light: #7baebe;
$custom-dark: #000000;

JSON

{
  "hex": "#378da3",
  "rgb": {
    "r": 55,
    "g": 141,
    "b": 163
  },
  "hsl": {
    "h": 192.222,
    "s": 49.541,
    "l": 42.745
  },
  "oklch": {
    "l": 0.60086,
    "c": 0.08738,
    "h": 217.8
  },
  "luminance": 0.22506
}

Semantic roles & 50–950 ramp

primary

#378DA3

secondary

#BE8678

accent

#6B4FD9

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #378DA3

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

Preview Lab → · Contrast checker → · Palette generator →