#378FA4#378FA4

#378FA4 is a mid, moderate cyan. Relative luminance 0.231; OKLCH L 60.6% C 0.088 H 216.5°. Best body text is #000000 at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#378FA4
RGB	rgb(55, 143, 164)
HSL	hsl(192, 50%, 43%)
HSV	hsv(192, 66%, 64%)
CMYK	cmyk(66.5%, 12.8%, 0%, 35.7%)
CIE-LAB	lab(55.21, -19.30, -18.80)
CIE-LCH	lch(55.21, 26.95, 224.25°)
OKLab	oklab(60.62% -0.0708 -0.0523)
OKLCH	oklch(60.62% 0.088 216.5)
XYZ	xyz(18.0961, 23.1355, 38.6267)
Luminance	0.2314 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378FA4 #A44C37

analogous

#37A483 #378FA4 #3758A4

triadic

#378FA4 #A4378F #8FA437

tetradic

#378FA4 #8337A4 #A44C37 #58A437

square

#378FA4 #8337A4 #A44C37 #58A437

split-complementary

#378FA4 #A43758 #A48337

monochromatic

#183F48 #286776 #378FA4 #53AFC5 #81C4D5

Accessibility & contrast

On white

3.73

#378FA4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.63

#378FA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378FA4

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378FA4	#FFFFFF	#000000	##000000
##378FA4	1.00	3.73	5.63	5.63
#FFFFFF	3.73	1.00	21.00	21.00
#000000	5.63	21.00	1.00	1.00
##000000	5.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#818BA5

Deuteranopia (green-blind)

#717FA4

Tritanopia (blue-blind)

#009796

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378fa4;
/* rgb */ color: rgb(55, 143, 164);
/* oklch */ color: oklch(60.6% 0.088 216.5);

Tailwind

colors: {
  custom: {
    50: '#7bb0bf',
    500: '#378fa4',
    950: '#000000',
  },
}

SCSS

$custom: #378fa4;
$custom-light: #7bb0bf;
$custom-dark: #000000;

JSON

{
  "hex": "#378fa4",
  "rgb": {
    "r": 55,
    "g": 143,
    "b": 164
  },
  "hsl": {
    "h": 191.56,
    "s": 49.772,
    "l": 42.941
  },
  "oklch": {
    "l": 0.60623,
    "c": 0.08804,
    "h": 216.5
  },
  "luminance": 0.23137
}

Semantic roles & 50–950 ramp

primary

#378FA4

secondary

#BE8679

accent

#694FD9

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #378FA4

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

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