#378BC1#378BC1

#378BC1 is a mid, moderate cyan. Relative luminance 0.231; OKLCH L 61.0% C 0.115 H 240.7°. Best body text is #000000 at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#378BC1
RGB	rgb(55, 139, 193)
HSL	hsl(203, 56%, 49%)
HSV	hsv(203, 72%, 76%)
CMYK	cmyk(71.5%, 28%, 0%, 24.3%)
CIE-LAB	lab(55.20, -7.39, -35.38)
CIE-LCH	lch(55.20, 36.15, 258.20°)
OKLab	oklab(61.01% -0.056 -0.0999)
OKLCH	oklch(61.01% 0.115 240.7)
XYZ	xyz(20.4301, 23.1254, 53.8287)
Luminance	0.2313 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378BC1 #C16D37

analogous

#37C1B2 #378BC1 #3746C1

triadic

#378BC1 #C1378B #8BC137

tetradic

#378BC1 #B237C1 #C16D37 #46C137

square

#378BC1 #B237C1 #C16D37 #46C137

split-complementary

#378BC1 #C13746 #C1B237

monochromatic

#1C4662 #296991 #378BC1 #63A7D2 #92C2E0

Accessibility & contrast

On white

3.73

#378BC1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.63

#378BC1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BC1

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378BC1	#FFFFFF	#000000	##000000
##378BC1	1.00	3.73	5.63	5.63
#FFFFFF	3.73	1.00	21.00	21.00
#000000	5.63	21.00	1.00	1.00
##000000	5.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#728CC3

Deuteranopia (green-blind)

#5F7EC0

Tritanopia (blue-blind)

#00989E

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378bc1;
/* rgb */ color: rgb(55, 139, 193);
/* oklch */ color: oklch(61.0% 0.115 240.7);

Tailwind

colors: {
  custom: {
    50: '#7facd4',
    500: '#378bc1',
    950: '#000000',
  },
}

SCSS

$custom: #378bc1;
$custom-light: #7facd4;
$custom-dark: #000000;

JSON

{
  "hex": "#378bc1",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 193
  },
  "hsl": {
    "h": 203.478,
    "s": 55.645,
    "l": 48.627
  },
  "oklch": {
    "l": 0.61011,
    "c": 0.11453,
    "h": 240.7
  },
  "luminance": 0.23128
}

Semantic roles & 50–950 ramp

primary

#378BC1

secondary

#CBA389

accent

#8449DF

background

#F8FAFD

surface

#EFF4FA

border

#CACED3

text

#0B1014

muted

#7C7F83

Preview Lab

Preview with #378BC1

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

Preview Lab → · Contrast checker → · Palette generator →