#378BC0#378BC0

#378BC0 is a mid, moderate cyan. Relative luminance 0.231; OKLCH L 61.0% C 0.113 H 240.2°. Best body text is #000000 at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#378BC0
RGB	rgb(55, 139, 192)
HSL	hsl(203, 55%, 48%)
HSV	hsv(203, 71%, 75%)
CMYK	cmyk(71.4%, 27.6%, 0%, 24.7%)
CIE-LAB	lab(55.16, -7.74, -34.88)
CIE-LCH	lch(55.16, 35.73, 257.49°)
OKLab	oklab(60.96% -0.0563 -0.0984)
OKLCH	oklch(60.96% 0.113 240.2)
XYZ	xyz(20.3189, 23.0810, 53.2432)
Luminance	0.2308 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378BC0 #C06C37

analogous

#37C0B0 #378BC0 #3746C0

triadic

#378BC0 #C0378B #8BC037

tetradic

#378BC0 #B037C0 #C06C37 #46C037

square

#378BC0 #B037C0 #C06C37 #46C037

split-complementary

#378BC0 #C03746 #C0B037

monochromatic

#1C4661 #296990 #378BC0 #62A7D2 #92C2E0

Accessibility & contrast

On white

3.74

#378BC0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.62

#378BC0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BC0

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378BC0	#FFFFFF	#000000	##000000
##378BC0	1.00	3.74	5.62	5.62
#FFFFFF	3.74	1.00	21.00	21.00
#000000	5.62	21.00	1.00	1.00
##000000	5.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#728BC2

Deuteranopia (green-blind)

#607EBF

Tritanopia (blue-blind)

#00989D

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378bc0;
/* rgb */ color: rgb(55, 139, 192);
/* oklch */ color: oklch(61.0% 0.113 240.2);

Tailwind

colors: {
  custom: {
    50: '#7facd3',
    500: '#378bc0',
    950: '#000000',
  },
}

SCSS

$custom: #378bc0;
$custom-light: #7facd3;
$custom-dark: #000000;

JSON

{
  "hex": "#378bc0",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 192
  },
  "hsl": {
    "h": 203.212,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.6096,
    "c": 0.11344,
    "h": 240.2
  },
  "luminance": 0.23083
}

Semantic roles & 50–950 ramp

primary

#378BC0

secondary

#CBA288

accent

#8349DF

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #378BC0

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

Preview Lab → · Contrast checker → · Palette generator →