#378CC5#378CC5

#378CC5 is a mid, moderate cyan. Relative luminance 0.236; OKLCH L 61.5% C 0.118 H 241.9°. Best body text is #000000 at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#378CC5
RGB	rgb(55, 140, 197)
HSL	hsl(204, 56%, 49%)
HSV	hsv(204, 72%, 77%)
CMYK	cmyk(72.1%, 28.9%, 0%, 22.7%)
CIE-LAB	lab(55.68, -6.57, -36.90)
CIE-LCH	lch(55.68, 37.48, 259.90°)
OKLab	oklab(61.45% -0.0557 -0.1043)
OKLCH	oklch(61.45% 0.118 241.9)
XYZ	xyz(21.0278, 23.5972, 56.2590)
Luminance	0.2360 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378CC5 #C57037

analogous

#37C5B7 #378CC5 #3745C5

triadic

#378CC5 #C5378C #8CC537

tetradic

#378CC5 #B737C5 #C57037 #45C537

square

#378CC5 #B737C5 #C57037 #45C537

split-complementary

#378CC5 #C53745 #C5B737

monochromatic

#1C4865 #2A6A95 #378CC5 #65A8D4 #95C3E1

Accessibility & contrast

On white

3.67

#378CC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.72

#378CC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378CC5

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378CC5	#FFFFFF	#000000	##000000
##378CC5	1.00	3.67	5.72	5.72
#FFFFFF	3.67	1.00	21.00	21.00
#000000	5.72	21.00	1.00	1.00
##000000	5.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#728DC8

Deuteranopia (green-blind)

#5E7FC4

Tritanopia (blue-blind)

#009AA0

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #378cc5;
/* rgb */ color: rgb(55, 140, 197);
/* oklch */ color: oklch(61.5% 0.118 241.9);

Tailwind

colors: {
  custom: {
    50: '#80add7',
    500: '#378cc5',
    950: '#000000',
  },
}

SCSS

$custom: #378cc5;
$custom-light: #80add7;
$custom-dark: #000000;

JSON

{
  "hex": "#378cc5",
  "rgb": {
    "r": 55,
    "g": 140,
    "b": 197
  },
  "hsl": {
    "h": 204.085,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.61453,
    "c": 0.11825,
    "h": 241.9
  },
  "luminance": 0.236
}

Semantic roles & 50–950 ramp

primary

#378CC5

secondary

#CDA58B

accent

#8548E0

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0B1014

muted

#7C7F83

Preview Lab

Preview with #378CC5

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

Preview Lab → · Contrast checker → · Palette generator →