#378ECA#378ECA

#378ECA is a light, vivid cyan. Relative luminance 0.244; OKLCH L 62.2% C 0.122 H 242.7°. Best body text is #000000 at 5.88:1 contrast (WCAG AA passes).

Color values

HEX	#378ECA
RGB	rgb(55, 142, 202)
HSL	hsl(204, 58%, 50%)
HSV	hsv(204, 73%, 79%)
CMYK	cmyk(72.8%, 29.7%, 0%, 20.8%)
CIE-LAB	lab(56.51, -5.97, -38.43)
CIE-LCH	lch(56.51, 38.89, 261.17°)
OKLab	oklab(62.18% -0.0561 -0.1087)
OKLCH	oklch(62.18% 0.122 242.7)
XYZ	xyz(21.9051, 24.4200, 59.4247)
Luminance	0.2442 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378ECA #CA7337

analogous

#37CABD #378ECA #3744CA

triadic

#378ECA #CA378E #8ECA37

tetradic

#378ECA #BD37CA #CA7337 #44CA37

square

#378ECA #BD37CA #CA7337 #44CA37

split-complementary

#378ECA #CA3744 #CABD37

monochromatic

#1C4A6A #296C9B #378ECA #67A9D7 #98C5E4

Accessibility & contrast

On white

3.57

#378ECA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.88

#378ECA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378ECA

5.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378ECA	#FFFFFF	#000000	##000000
##378ECA	1.00	3.57	5.88	5.88
#FFFFFF	3.57	1.00	21.00	21.00
#000000	5.88	21.00	1.00	1.00
##000000	5.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#728FCD

Deuteranopia (green-blind)

#5E81C9

Tritanopia (blue-blind)

#009DA3

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #378eca;
/* rgb */ color: rgb(55, 142, 202);
/* oklch */ color: oklch(62.2% 0.122 242.7);

Tailwind

colors: {
  custom: {
    50: '#80aeda',
    500: '#378eca',
    950: '#000000',
  },
}

SCSS

$custom: #378eca;
$custom-light: #80aeda;
$custom-dark: #000000;

JSON

{
  "hex": "#378eca",
  "rgb": {
    "r": 55,
    "g": 142,
    "b": 202
  },
  "hsl": {
    "h": 204.49,
    "s": 58.103,
    "l": 50.392
  },
  "oklch": {
    "l": 0.62181,
    "c": 0.12235,
    "h": 242.7
  },
  "luminance": 0.24422
}

Semantic roles & 50–950 ramp

primary

#378ECA

secondary

#CFA88E

accent

#8646E1

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #378ECA

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

Preview Lab → · Contrast checker → · Palette generator →