#378FC4#378FC4

#378FC4 is a light, moderate cyan. Relative luminance 0.244; OKLCH L 62.1% C 0.115 H 239.2°. Best body text is #000000 at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#378FC4
RGB	rgb(55, 143, 196)
HSL	hsl(203, 56%, 49%)
HSV	hsv(203, 72%, 77%)
CMYK	cmyk(71.9%, 27%, 0%, 23.1%)
CIE-LAB	lab(56.53, -8.63, -35.01)
CIE-LCH	lch(56.53, 36.06, 256.15°)
OKLab	oklab(62.11% -0.059 -0.0988)
OKLCH	oklch(62.11% 0.115 239.2)
XYZ	xyz(21.3579, 24.4403, 55.8057)
Luminance	0.2444 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378FC4 #C46C37

analogous

#37C4B3 #378FC4 #3749C4

triadic

#378FC4 #C4378F #8FC437

tetradic

#378FC4 #B337C4 #C46C37 #49C437

square

#378FC4 #B337C4 #C46C37 #49C437

split-complementary

#378FC4 #C43749 #C4B337

monochromatic

#1C4964 #2A6C94 #378FC4 #65AAD4 #94C4E1

Accessibility & contrast

On white

3.57

#378FC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.89

#378FC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378FC4

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378FC4	#FFFFFF	#000000	##000000
##378FC4	1.00	3.57	5.89	5.89
#FFFFFF	3.57	1.00	21.00	21.00
#000000	5.89	21.00	1.00	1.00
##000000	5.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#768FC6

Deuteranopia (green-blind)

#6382C3

Tritanopia (blue-blind)

#009CA1

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #378fc4;
/* rgb */ color: rgb(55, 143, 196);
/* oklch */ color: oklch(62.1% 0.115 239.2);

Tailwind

colors: {
  custom: {
    50: '#7fafd6',
    500: '#378fc4',
    950: '#000000',
  },
}

SCSS

$custom: #378fc4;
$custom-light: #7fafd6;
$custom-dark: #000000;

JSON

{
  "hex": "#378fc4",
  "rgb": {
    "r": 55,
    "g": 143,
    "b": 196
  },
  "hsl": {
    "h": 202.553,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.62106,
    "c": 0.11505,
    "h": 239.2
  },
  "luminance": 0.24443
}

Semantic roles & 50–950 ramp

primary

#378FC4

secondary

#CCA38B

accent

#8148DF

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0B1014

muted

#7C7F83

Preview Lab

Preview with #378FC4

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

Preview Lab → · Contrast checker → · Palette generator →