#378BC5#378BC5

#378BC5 is a mid, moderate cyan. Relative luminance 0.233; OKLCH L 61.2% C 0.119 H 242.6°. Best body text is #000000 at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#378BC5
RGB	rgb(55, 139, 197)
HSL	hsl(205, 56%, 49%)
HSV	hsv(205, 72%, 77%)
CMYK	cmyk(72.1%, 29.4%, 0%, 22.7%)
CIE-LAB	lab(55.39, -5.99, -37.36)
CIE-LCH	lch(55.39, 37.84, 260.88°)
OKLab	oklab(61.22% -0.0548 -0.1056)
OKLCH	oklch(61.22% 0.119 242.6)
XYZ	xyz(20.8823, 23.3063, 56.2105)
Luminance	0.2331 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378BC5 #C57137

analogous

#37C5B8 #378BC5 #3744C5

triadic

#378BC5 #C5378B #8BC537

tetradic

#378BC5 #B837C5 #C57137 #44C537

square

#378BC5 #B837C5 #C57137 #44C537

split-complementary

#378BC5 #C53744 #C5B837

monochromatic

#1C4765 #2A6995 #378BC5 #65A7D4 #95C2E1

Accessibility & contrast

On white

3.71

#378BC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.66

#378BC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BC5

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378BC5	#FFFFFF	#000000	##000000
##378BC5	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)

#708CC8

Deuteranopia (green-blind)

#5D7FC4

Tritanopia (blue-blind)

#00999F

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #378bc5;
/* rgb */ color: rgb(55, 139, 197);
/* oklch */ color: oklch(61.2% 0.119 242.6);

Tailwind

colors: {
  custom: {
    50: '#80acd7',
    500: '#378bc5',
    950: '#000000',
  },
}

SCSS

$custom: #378bc5;
$custom-light: #80acd7;
$custom-dark: #000000;

JSON

{
  "hex": "#378bc5",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 197
  },
  "hsl": {
    "h": 204.507,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.61219,
    "c": 0.11899,
    "h": 242.6
  },
  "luminance": 0.23309
}

Semantic roles & 50–950 ramp

primary

#378BC5

secondary

#CDA68B

accent

#8648E0

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0B1014

muted

#7C7F83

Preview Lab

Preview with #378BC5

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

Preview Lab → · Contrast checker → · Palette generator →