#378AB8#378AB8

#378AB8 is a mid, moderate cyan. Relative luminance 0.225; OKLCH L 60.3% C 0.106 H 236.7°. Best body text is #000000 at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#378AB8
RGB	rgb(55, 138, 184)
HSL	hsl(201, 54%, 47%)
HSV	hsv(201, 70%, 72%)
CMYK	cmyk(70.1%, 25%, 0%, 27.8%)
CIE-LAB	lab(54.50, -9.93, -31.35)
CIE-LCH	lch(54.50, 32.89, 252.43°)
OKLab	oklab(60.32% -0.058 -0.0882)
OKLCH	oklch(60.32% 0.106 236.7)
XYZ	xyz(19.3124, 22.4477, 48.6531)
Luminance	0.2245 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378AB8 #B86537

analogous

#37B8A6 #378AB8 #374AB8

triadic

#378AB8 #B8378A #8AB837

tetradic

#378AB8 #A637B8 #B86537 #4AB837

square

#378AB8 #A637B8 #B86537 #4AB837

split-complementary

#378AB8 #B8374A #B8A637

monochromatic

#1B435A #296789 #378AB8 #5DA6CF #8DC0DD

Accessibility & contrast

On white

3.83

#378AB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.49

#378AB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378AB8

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378AB8	#FFFFFF	#000000	##000000
##378AB8	1.00	3.83	5.49	5.49
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.49	21.00	1.00	1.00
##000000	5.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7489BA

Deuteranopia (green-blind)

#637DB7

Tritanopia (blue-blind)

#00969A

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #378ab8;
/* rgb */ color: rgb(55, 138, 184);
/* oklch */ color: oklch(60.3% 0.106 236.7);

Tailwind

colors: {
  custom: {
    50: '#7daccd',
    500: '#378ab8',
    950: '#000000',
  },
}

SCSS

$custom: #378ab8;
$custom-light: #7daccd;
$custom-dark: #000000;

JSON

{
  "hex": "#378ab8",
  "rgb": {
    "r": 55,
    "g": 138,
    "b": 184
  },
  "hsl": {
    "h": 201.395,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.60321,
    "c": 0.10561,
    "h": 236.7
  },
  "luminance": 0.2245
}

Semantic roles & 50–950 ramp

primary

#378AB8

secondary

#C79C84

accent

#7F4ADD

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378AB8

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

Preview Lab → · Contrast checker → · Palette generator →