#378BD6#378BD6

#378BD6 is a light, vivid cyan. Relative luminance 0.241; OKLCH L 62.1% C 0.139 H 249.0°. Best body text is #000000 at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#378BD6
RGB	rgb(55, 139, 214)
HSL	hsl(208, 66%, 53%)
HSV	hsv(208, 74%, 84%)
CMYK	cmyk(74.3%, 35%, 0%, 16.1%)
CIE-LAB	lab(56.22, 0.03, -45.64)
CIE-LCH	lch(56.22, 45.64, 270.04°)
OKLab	oklab(62.15% -0.0498 -0.1298)
OKLCH	oklch(62.15% 0.139 249)
XYZ	xyz(22.9412, 24.1299, 67.0537)
Luminance	0.2413 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378BD6 #D68237

analogous

#37D6D2 #378BD6 #373BD6

triadic

#378BD6 #D6378B #8BD637

tetradic

#378BD6 #D237D6 #D68237 #3BD637

square

#378BD6 #D237D6 #D68237 #3BD637

split-complementary

#378BD6 #D6373B #D6D237

monochromatic

#194C7A #236CAC #378BD6 #6AA8E0 #9DC6EB

Accessibility & contrast

On white

3.60

#378BD6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.83

#378BD6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BD6

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378BD6	#FFFFFF	#000000	##000000
##378BD6	1.00	3.60	5.83	5.83
#FFFFFF	3.60	1.00	21.00	21.00
#000000	5.83	21.00	1.00	1.00
##000000	5.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#688FD9

Deuteranopia (green-blind)

#5180D5

Tritanopia (blue-blind)

#009DA6

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #378bd6;
/* rgb */ color: rgb(55, 139, 214);
/* oklch */ color: oklch(62.1% 0.139 249.0);

Tailwind

colors: {
  custom: {
    50: '#82ace3',
    500: '#378bd6',
    950: '#000000',
  },
}

SCSS

$custom: #378bd6;
$custom-light: #82ace3;
$custom-dark: #000000;

JSON

{
  "hex": "#378bd6",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 214
  },
  "hsl": {
    "h": 208.302,
    "s": 65.975,
    "l": 52.745
  },
  "oklch": {
    "l": 0.62146,
    "c": 0.13904,
    "h": 249
  },
  "luminance": 0.24133
}

Semantic roles & 50–950 ramp

primary

#378BD6

secondary

#D7B292

accent

#8F3FE9

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #378BD6

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

Preview Lab → · Contrast checker → · Palette generator →