#378EC6#378EC6

#378EC6 is a mid, moderate cyan. Relative luminance 0.242; OKLCH L 62.0% C 0.118 H 240.9°. Best body text is #000000 at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#378EC6
RGB	rgb(55, 142, 198)
HSL	hsl(203, 57%, 50%)
HSV	hsv(203, 72%, 78%)
CMYK	cmyk(72.2%, 28.3%, 0%, 22.4%)
CIE-LAB	lab(56.32, -7.37, -36.46)
CIE-LCH	lch(56.32, 37.20, 258.57°)
OKLab	oklab(61.97% -0.0574 -0.103)
OKLCH	oklch(61.97% 0.118 240.9)
XYZ	xyz(21.4376, 24.2330, 56.9627)
Luminance	0.2424 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378EC6 #C66F37

analogous

#37C6B7 #378EC6 #3746C6

triadic

#378EC6 #C6378E #8EC637

tetradic

#378EC6 #B737C6 #C66F37 #46C637

square

#378EC6 #B737C6 #C66F37 #46C637

split-complementary

#378EC6 #C63746 #C6B737

monochromatic

#1C4966 #2A6C96 #378EC6 #66A9D4 #96C4E2

Accessibility & contrast

On white

3.59

#378EC6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.85

#378EC6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378EC6

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378EC6	#FFFFFF	#000000	##000000
##378EC6	1.00	3.59	5.85	5.85
#FFFFFF	3.59	1.00	21.00	21.00
#000000	5.85	21.00	1.00	1.00
##000000	5.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#748FC9

Deuteranopia (green-blind)

#6081C5

Tritanopia (blue-blind)

#009CA1

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #378ec6;
/* rgb */ color: rgb(55, 142, 198);
/* oklch */ color: oklch(62.0% 0.118 240.9);

Tailwind

colors: {
  custom: {
    50: '#80aed7',
    500: '#378ec6',
    950: '#000000',
  },
}

SCSS

$custom: #378ec6;
$custom-light: #80aed7;
$custom-dark: #000000;

JSON

{
  "hex": "#378ec6",
  "rgb": {
    "r": 55,
    "g": 142,
    "b": 198
  },
  "hsl": {
    "h": 203.497,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.61973,
    "c": 0.11789,
    "h": 240.9
  },
  "luminance": 0.24235
}

Semantic roles & 50–950 ramp

primary

#378EC6

secondary

#CDA58C

accent

#8348E0

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0B1014

muted

#7C7F83

Preview Lab

Preview with #378EC6

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

Preview Lab → · Contrast checker → · Palette generator →