#378EB0#378EB0

#378EB0 is a mid, moderate cyan. Relative luminance 0.233; OKLCH L 60.9% C 0.096 H 227.6°. Best body text is #000000 at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#378EB0
RGB	rgb(55, 142, 176)
HSL	hsl(197, 52%, 45%)
HSV	hsv(197, 69%, 69%)
CMYK	cmyk(68.8%, 19.3%, 0%, 31%)
CIE-LAB	lab(55.37, -14.86, -25.43)
CIE-LCH	lch(55.37, 29.45, 239.70°)
OKLab	oklab(60.9% -0.065 -0.0712)
OKLCH	oklch(60.9% 0.096 227.6)
XYZ	xyz(19.0819, 23.2907, 44.5558)
Luminance	0.2329 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378EB0 #B05937

analogous

#37B096 #378EB0 #3751B0

triadic

#378EB0 #B0378E #8EB037

tetradic

#378EB0 #9637B0 #B05937 #51B037

square

#378EB0 #9637B0 #B05937 #51B037

split-complementary

#378EB0 #B03751 #B09637

monochromatic

#1A4353 #286881 #378EB0 #59ABCB #88C3DA

Accessibility & contrast

On white

3.71

#378EB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.66

#378EB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378EB0

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378EB0	#FFFFFF	#000000	##000000
##378EB0	1.00	3.71	5.66	5.66
#FFFFFF	3.71	1.00	21.00	21.00
#000000	5.66	21.00	1.00	1.00
##000000	5.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C8BB2

Deuteranopia (green-blind)

#6B7FB0

Tritanopia (blue-blind)

#009899

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #378eb0;
/* rgb */ color: rgb(55, 142, 176);
/* oklch */ color: oklch(60.9% 0.096 227.6);

Tailwind

colors: {
  custom: {
    50: '#7cafc7',
    500: '#378eb0',
    950: '#000000',
  },
}

SCSS

$custom: #378eb0;
$custom-light: #7cafc7;
$custom-dark: #000000;

JSON

{
  "hex": "#378eb0",
  "rgb": {
    "r": 55,
    "g": 142,
    "b": 176
  },
  "hsl": {
    "h": 196.86,
    "s": 52.381,
    "l": 45.294
  },
  "oklch": {
    "l": 0.60904,
    "c": 0.09641,
    "h": 227.6
  },
  "luminance": 0.23293
}

Semantic roles & 50–950 ramp

primary

#378EB0

secondary

#C4927F

accent

#744CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378EB0

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

Preview Lab → · Contrast checker → · Palette generator →