#378FB8#378FB8

#378FB8 is a mid, moderate cyan. Relative luminance 0.239; OKLCH L 61.5% C 0.103 H 232.2°. Best body text is #000000 at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#378FB8
RGB	rgb(55, 143, 184)
HSL	hsl(199, 54%, 47%)
HSV	hsv(199, 70%, 72%)
CMYK	cmyk(70.1%, 22.3%, 0%, 27.8%)
CIE-LAB	lab(56.00, -12.73, -29.01)
CIE-LCH	lch(56.00, 31.69, 246.30°)
OKLab	oklab(61.52% -0.0631 -0.0815)
OKLCH	oklch(61.52% 0.103 232.2)
XYZ	xyz(20.0463, 23.9156, 48.8978)
Luminance	0.2392 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378FB8 #B86037

analogous

#37B8A1 #378FB8 #374EB8

triadic

#378FB8 #B8378F #8FB837

tetradic

#378FB8 #A137B8 #B86037 #4EB837

square

#378FB8 #A137B8 #B86037 #4EB837

split-complementary

#378FB8 #B8374E #B8A137

monochromatic

#1B465A #296A89 #378FB8 #5DABCF #8DC3DD

Accessibility & contrast

On white

3.63

#378FB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.78

#378FB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378FB8

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378FB8	#FFFFFF	#000000	##000000
##378FB8	1.00	3.63	5.78	5.78
#FFFFFF	3.63	1.00	21.00	21.00
#000000	5.78	21.00	1.00	1.00
##000000	5.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B8DBA

Deuteranopia (green-blind)

#6981B7

Tritanopia (blue-blind)

#009A9D

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #378fb8;
/* rgb */ color: rgb(55, 143, 184);
/* oklch */ color: oklch(61.5% 0.103 232.2);

Tailwind

colors: {
  custom: {
    50: '#7eafcd',
    500: '#378fb8',
    950: '#000000',
  },
}

SCSS

$custom: #378fb8;
$custom-light: #7eafcd;
$custom-dark: #000000;

JSON

{
  "hex": "#378fb8",
  "rgb": {
    "r": 55,
    "g": 143,
    "b": 184
  },
  "hsl": {
    "h": 199.07,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.61518,
    "c": 0.10305,
    "h": 232.2
  },
  "luminance": 0.23918
}

Semantic roles & 50–950 ramp

primary

#378FB8

secondary

#C79984

accent

#794ADD

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378FB8

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

Preview Lab → · Contrast checker → · Palette generator →