#378CC0#378CC0

#378CC0 is a mid, moderate cyan. Relative luminance 0.234; OKLCH L 61.2% C 0.113 H 239.4°. Best body text is #000000 at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#378CC0
RGB	rgb(55, 140, 192)
HSL	hsl(203, 55%, 48%)
HSV	hsv(203, 71%, 75%)
CMYK	cmyk(71.4%, 27.1%, 0%, 24.7%)
CIE-LAB	lab(55.45, -8.31, -34.42)
CIE-LCH	lch(55.45, 35.41, 256.43°)
OKLab	oklab(61.2% -0.0573 -0.0971)
OKLCH	oklch(61.2% 0.113 239.4)
XYZ	xyz(20.4644, 23.3719, 53.2916)
Luminance	0.2337 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378CC0 #C06B37

analogous

#37C0AF #378CC0 #3747C0

triadic

#378CC0 #C0378C #8CC037

tetradic

#378CC0 #AF37C0 #C06B37 #47C037

square

#378CC0 #AF37C0 #C06B37 #47C037

split-complementary

#378CC0 #C03747 #C0AF37

monochromatic

#1C4761 #296990 #378CC0 #62A8D2 #92C2E0

Accessibility & contrast

On white

3.70

#378CC0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.67

#378CC0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378CC0

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378CC0	#FFFFFF	#000000	##000000
##378CC0	1.00	3.70	5.67	5.67
#FFFFFF	3.70	1.00	21.00	21.00
#000000	5.67	21.00	1.00	1.00
##000000	5.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#748CC2

Deuteranopia (green-blind)

#617FBF

Tritanopia (blue-blind)

#00999E

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #378cc0;
/* rgb */ color: rgb(55, 140, 192);
/* oklch */ color: oklch(61.2% 0.113 239.4);

Tailwind

colors: {
  custom: {
    50: '#7fadd3',
    500: '#378cc0',
    950: '#000000',
  },
}

SCSS

$custom: #378cc0;
$custom-light: #7fadd3;
$custom-dark: #000000;

JSON

{
  "hex": "#378cc0",
  "rgb": {
    "r": 55,
    "g": 140,
    "b": 192
  },
  "hsl": {
    "h": 202.774,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.61196,
    "c": 0.11277,
    "h": 239.4
  },
  "luminance": 0.23374
}

Semantic roles & 50–950 ramp

primary

#378CC0

secondary

#CBA188

accent

#8249DF

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #378CC0

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

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