#378CDA#378CDA

#378CDA is a light, vivid cyan. Relative luminance 0.246; OKLCH L 62.6% C 0.143 H 249.7°. Best body text is #000000 at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#378CDA
RGB	rgb(55, 140, 218)
HSL	hsl(209, 69%, 54%)
HSV	hsv(209, 75%, 85%)
CMYK	cmyk(74.8%, 35.8%, 0%, 14.5%)
CIE-LAB	lab(56.71, 0.87, -47.11)
CIE-LCH	lch(56.71, 47.12, 271.06°)
OKLab	oklab(62.6% -0.0497 -0.1341)
OKLCH	oklch(62.6% 0.143 249.7)
XYZ	xyz(23.6037, 24.6276, 69.8257)
Luminance	0.2463 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378CDA #DA8537

analogous

#37DAD7 #378CDA #373ADA

triadic

#378CDA #DA378C #8CDA37

tetradic

#378CDA #D737DA #DA8537 #3ADA37

square

#378CDA #D737DA #DA8537 #3ADA37

split-complementary

#378CDA #DA373A #DAD737

monochromatic

#184E7F #216DB3 #378CDA #6BAAE4 #9EC7ED

Accessibility & contrast

On white

3.54

#378CDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.93

#378CDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378CDA

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378CDA	#FFFFFF	#000000	##000000
##378CDA	1.00	3.54	5.93	5.93
#FFFFFF	3.54	1.00	21.00	21.00
#000000	5.93	21.00	1.00	1.00
##000000	5.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6890DD

Deuteranopia (green-blind)

#5081D8

Tritanopia (blue-blind)

#009FA9

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #378cda;
/* rgb */ color: rgb(55, 140, 218);
/* oklch */ color: oklch(62.6% 0.143 249.7);

Tailwind

colors: {
  custom: {
    50: '#83ade6',
    500: '#378cda',
    950: '#000000',
  },
}

SCSS

$custom: #378cda;
$custom-light: #83ade6;
$custom-dark: #000000;

JSON

{
  "hex": "#378cda",
  "rgb": {
    "r": 55,
    "g": 140,
    "b": 218
  },
  "hsl": {
    "h": 208.712,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.626,
    "c": 0.14298,
    "h": 249.7
  },
  "luminance": 0.2463
}

Semantic roles & 50–950 ramp

primary

#378CDA

secondary

#D9B593

accent

#903CEC

background

#F8FAFE

surface

#F0F4FC

border

#CBCED5

text

#0C1016

muted

#7D7F84

Preview Lab

Preview with #378CDA

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

Preview Lab → · Contrast checker → · Palette generator →