#378BE0#378BE0

#378BE0 is a light, vivid cyan. Relative luminance 0.247; OKLCH L 62.7% C 0.151 H 251.8°. Best body text is #000000 at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#378BE0
RGB	rgb(55, 139, 224)
HSL	hsl(210, 73%, 55%)
HSV	hsv(210, 75%, 88%)
CMYK	cmyk(75.4%, 37.9%, 0%, 12.2%)
CIE-LAB	lab(56.74, 3.63, -50.42)
CIE-LCH	lch(56.74, 50.55, 274.11°)
OKLab	oklab(62.72% -0.0473 -0.1438)
OKLCH	oklch(62.72% 0.151 251.8)
XYZ	xyz(24.2577, 24.6565, 73.9873)
Luminance	0.2466 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378BE0 #E08C37

analogous

#37DFE0 #378BE0 #3837E0

triadic

#378BE0 #E0378B #8BE037

tetradic

#378BE0 #E037DF #E08C37 #37E038

square

#378BE0 #E037DF #E08C37 #37E038

split-complementary

#378BE0 #E03837 #DFE037

monochromatic

#154E88 #1D6CBD #378BE0 #6CAAE8 #A1C8F0

Accessibility & contrast

On white

3.54

#378BE0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.93

#378BE0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BE0

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378BE0	#FFFFFF	#000000	##000000
##378BE0	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)

#6391E3

Deuteranopia (green-blind)

#4981DE

Tritanopia (blue-blind)

#009FAB

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #378be0;
/* rgb */ color: rgb(55, 139, 224);
/* oklch */ color: oklch(62.7% 0.151 251.8);

Tailwind

colors: {
  custom: {
    50: '#84acea',
    500: '#378be0',
    950: '#000000',
  },
}

SCSS

$custom: #378be0;
$custom-light: #84acea;
$custom-dark: #000000;

JSON

{
  "hex": "#378be0",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 224
  },
  "hsl": {
    "h": 210.178,
    "s": 73.16,
    "l": 54.706
  },
  "oklch": {
    "l": 0.62725,
    "c": 0.15137,
    "h": 251.8
  },
  "luminance": 0.24659
}

Semantic roles & 50–950 ramp

primary

#378BE0

secondary

#DDBA96

accent

#9438F0

background

#F8FAFE

surface

#F0F4FD

border

#CBCED5

text

#0D1016

muted

#7D7F84

Preview Lab

Preview with #378BE0

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

Preview Lab → · Contrast checker → · Palette generator →