#378BC3#378BC3

#378BC3 is a mid, moderate cyan. Relative luminance 0.232; OKLCH L 61.1% C 0.117 H 241.7°. Best body text is #000000 at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#378BC3
RGB	rgb(55, 139, 195)
HSL	hsl(204, 56%, 49%)
HSV	hsv(204, 72%, 76%)
CMYK	cmyk(71.8%, 28.7%, 0%, 23.5%)
CIE-LAB	lab(55.29, -6.69, -36.37)
CIE-LCH	lch(55.29, 36.98, 259.57°)
OKLab	oklab(61.11% -0.0554 -0.1028)
OKLCH	oklch(61.11% 0.117 241.7)
XYZ	xyz(20.6547, 23.2153, 55.0116)
Luminance	0.2322 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378BC3 #C36F37

analogous

#37C3B5 #378BC3 #3745C3

triadic

#378BC3 #C3378B #8BC337

tetradic

#378BC3 #B537C3 #C36F37 #45C337

square

#378BC3 #B537C3 #C36F37 #45C337

split-complementary

#378BC3 #C33745 #C3B537

monochromatic

#1C4764 #2A6993 #378BC3 #64A7D3 #94C2E1

Accessibility & contrast

On white

3.72

#378BC3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.64

#378BC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BC3

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378BC3	#FFFFFF	#000000	##000000
##378BC3	1.00	3.72	5.64	5.64
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.64	21.00	1.00	1.00
##000000	5.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#718CC6

Deuteranopia (green-blind)

#5E7EC2

Tritanopia (blue-blind)

#00999F

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378bc3;
/* rgb */ color: rgb(55, 139, 195);
/* oklch */ color: oklch(61.1% 0.117 241.7);

Tailwind

colors: {
  custom: {
    50: '#7facd5',
    500: '#378bc3',
    950: '#000000',
  },
}

SCSS

$custom: #378bc3;
$custom-light: #7facd5;
$custom-dark: #000000;

JSON

{
  "hex": "#378bc3",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 195
  },
  "hsl": {
    "h": 204,
    "s": 56,
    "l": 49.02
  },
  "oklch": {
    "l": 0.61114,
    "c": 0.11675,
    "h": 241.7
  },
  "luminance": 0.23218
}

Semantic roles & 50–950 ramp

primary

#378BC3

secondary

#CCA48A

accent

#8549DF

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0B1014

muted

#7C7F83

Preview Lab

Preview with #378BC3

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

Preview Lab → · Contrast checker → · Palette generator →