#378FBC#378FBC

#378FBC is a mid, moderate cyan. Relative luminance 0.241; OKLCH L 61.7% C 0.107 H 234.7°. Best body text is #000000 at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#378FBC
RGB	rgb(55, 143, 188)
HSL	hsl(200, 55%, 48%)
HSV	hsv(200, 71%, 74%)
CMYK	cmyk(70.7%, 23.9%, 0%, 26.3%)
CIE-LAB	lab(56.17, -11.38, -31.02)
CIE-LCH	lch(56.17, 33.05, 249.86°)
OKLab	oklab(61.71% -0.0617 -0.0872)
OKLCH	oklch(61.71% 0.107 234.7)
XYZ	xyz(20.4715, 24.0857, 51.1373)
Luminance	0.2409 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378FBC #BC6437

analogous

#37BCA7 #378FBC #374CBC

triadic

#378FBC #BC378F #8FBC37

tetradic

#378FBC #A737BC #BC6437 #4CBC37

square

#378FBC #A737BC #BC6437 #4CBC37

split-complementary

#378FBC #BC374C #BCA737

monochromatic

#1B475D #296B8D #378FBC #60AAD0 #8FC3DE

Accessibility & contrast

On white

3.61

#378FBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.82

#378FBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378FBC

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378FBC	#FFFFFF	#000000	##000000
##378FBC	1.00	3.61	5.82	5.82
#FFFFFF	3.61	1.00	21.00	21.00
#000000	5.82	21.00	1.00	1.00
##000000	5.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#798EBE

Deuteranopia (green-blind)

#6781BB

Tritanopia (blue-blind)

#009B9E

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #378fbc;
/* rgb */ color: rgb(55, 143, 188);
/* oklch */ color: oklch(61.7% 0.107 234.7);

Tailwind

colors: {
  custom: {
    50: '#7eafd0',
    500: '#378fbc',
    950: '#000000',
  },
}

SCSS

$custom: #378fbc;
$custom-light: #7eafd0;
$custom-dark: #000000;

JSON

{
  "hex": "#378fbc",
  "rgb": {
    "r": 55,
    "g": 143,
    "b": 188
  },
  "hsl": {
    "h": 200.301,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.6171,
    "c": 0.10686,
    "h": 234.7
  },
  "luminance": 0.24088
}

Semantic roles & 50–950 ramp

primary

#378FBC

secondary

#C99D86

accent

#7C4ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #378FBC

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

Preview Lab → · Contrast checker → · Palette generator →