#378CA4#378CA4

#378CA4 is a mid, moderate cyan. Relative luminance 0.222; OKLCH L 59.9% C 0.088 H 219.8°. Best body text is #000000 at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#378CA4
RGB	rgb(55, 140, 164)
HSL	hsl(193, 50%, 43%)
HSV	hsv(193, 66%, 64%)
CMYK	cmyk(66.5%, 14.6%, 0%, 35.7%)
CIE-LAB	lab(54.29, -17.70, -20.21)
CIE-LCH	lch(54.29, 26.87, 228.80°)
OKLab	oklab(59.88% -0.0676 -0.0563)
OKLCH	oklch(59.88% 0.088 219.8)
XYZ	xyz(17.6517, 22.2468, 38.4786)
Luminance	0.2225 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378CA4 #A44F37

analogous

#37A485 #378CA4 #3755A4

triadic

#378CA4 #A4378C #8CA437

tetradic

#378CA4 #8537A4 #A44F37 #55A437

square

#378CA4 #8537A4 #A44F37 #55A437

split-complementary

#378CA4 #A43755 #A48537

monochromatic

#183E48 #286576 #378CA4 #53ACC5 #81C2D5

Accessibility & contrast

On white

3.85

#378CA4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.45

#378CA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378CA4

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378CA4	#FFFFFF	#000000	##000000
##378CA4	1.00	3.85	5.45	5.45
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.45	21.00	1.00	1.00
##000000	5.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D88A5

Deuteranopia (green-blind)

#6E7DA4

Tritanopia (blue-blind)

#009494

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #378ca4;
/* rgb */ color: rgb(55, 140, 164);
/* oklch */ color: oklch(59.9% 0.088 219.8);

Tailwind

colors: {
  custom: {
    50: '#7badbf',
    500: '#378ca4',
    950: '#000000',
  },
}

SCSS

$custom: #378ca4;
$custom-light: #7badbf;
$custom-dark: #000000;

JSON

{
  "hex": "#378ca4",
  "rgb": {
    "r": 55,
    "g": 140,
    "b": 164
  },
  "hsl": {
    "h": 193.211,
    "s": 49.772,
    "l": 42.941
  },
  "oklch": {
    "l": 0.59882,
    "c": 0.08798,
    "h": 219.8
  },
  "luminance": 0.22249
}

Semantic roles & 50–950 ramp

primary

#378CA4

secondary

#BE8879

accent

#6D4FD9

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #378CA4

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

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