#378DC3#378DC3

#378DC3 is a mid, moderate cyan. Relative luminance 0.238; OKLCH L 61.6% C 0.115 H 240.2°. Best body text is #000000 at 5.76:1 contrast (WCAG AA passes).

Color values

HEX	#378DC3
RGB	rgb(55, 141, 195)
HSL	hsl(203, 56%, 49%)
HSV	hsv(203, 72%, 76%)
CMYK	cmyk(71.8%, 27.7%, 0%, 23.5%)
CIE-LAB	lab(55.89, -7.84, -35.44)
CIE-LCH	lch(55.89, 36.30, 257.53°)
OKLab	oklab(61.58% -0.0573 -0.1001)
OKLCH	oklch(61.58% 0.115 240.2)
XYZ	xyz(20.9469, 23.7997, 55.1090)
Luminance	0.2380 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378DC3 #C36D37

analogous

#37C3B3 #378DC3 #3747C3

triadic

#378DC3 #C3378D #8DC337

tetradic

#378DC3 #B337C3 #C36D37 #47C337

square

#378DC3 #B337C3 #C36D37 #47C337

split-complementary

#378DC3 #C33747 #C3B337

monochromatic

#1C4864 #2A6A93 #378DC3 #64A8D3 #94C3E1

Accessibility & contrast

On white

3.65

#378DC3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.76

#378DC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378DC3

5.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378DC3	#FFFFFF	#000000	##000000
##378DC3	1.00	3.65	5.76	5.76
#FFFFFF	3.65	1.00	21.00	21.00
#000000	5.76	21.00	1.00	1.00
##000000	5.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#748DC5

Deuteranopia (green-blind)

#6180C2

Tritanopia (blue-blind)

#009BA0

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #378dc3;
/* rgb */ color: rgb(55, 141, 195);
/* oklch */ color: oklch(61.6% 0.115 240.2);

Tailwind

colors: {
  custom: {
    50: '#7faed5',
    500: '#378dc3',
    950: '#000000',
  },
}

SCSS

$custom: #378dc3;
$custom-light: #7faed5;
$custom-dark: #000000;

JSON

{
  "hex": "#378dc3",
  "rgb": {
    "r": 55,
    "g": 141,
    "b": 195
  },
  "hsl": {
    "h": 203.143,
    "s": 56,
    "l": 49.02
  },
  "oklch": {
    "l": 0.61584,
    "c": 0.11533,
    "h": 240.2
  },
  "luminance": 0.23802
}

Semantic roles & 50–950 ramp

primary

#378DC3

secondary

#CCA38A

accent

#8349DF

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0B1014

muted

#7C7F83

Preview Lab

Preview with #378DC3

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

Preview Lab → · Contrast checker → · Palette generator →