#378FA1#378FA1

#378FA1 is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.5% C 0.087 H 213.6°. Best body text is #000000 at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#378FA1
RGB	rgb(55, 143, 161)
HSL	hsl(190, 49%, 42%)
HSV	hsv(190, 66%, 63%)
CMYK	cmyk(65.8%, 11.2%, 0%, 36.9%)
CIE-LAB	lab(55.10, -20.26, -17.25)
CIE-LCH	lch(55.10, 26.60, 220.41°)
OKLab	oklab(60.5% -0.072 -0.0479)
OKLCH	oklch(60.5% 0.087 213.6)
XYZ	xyz(17.8284, 23.0284, 37.2166)
Luminance	0.2303 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378FA1 #A14937

analogous

#37A17E #378FA1 #375AA1

triadic

#378FA1 #A1378F #8FA137

tetradic

#378FA1 #7E37A1 #A14937 #5AA137

square

#378FA1 #7E37A1 #A14937 #5AA137

split-complementary

#378FA1 #A1375A #A17E37

monochromatic

#183E46 #276673 #378FA1 #51B0C4 #7FC5D3

Accessibility & contrast

On white

3.75

#378FA1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.61

#378FA1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378FA1

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378FA1	#FFFFFF	#000000	##000000
##378FA1	1.00	3.75	5.61	5.61
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.61	21.00	1.00	1.00
##000000	5.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#828AA2

Deuteranopia (green-blind)

#727FA1

Tritanopia (blue-blind)

#009695

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378fa1;
/* rgb */ color: rgb(55, 143, 161);
/* oklch */ color: oklch(60.5% 0.087 213.6);

Tailwind

colors: {
  custom: {
    50: '#7bb0bc',
    500: '#378fa1',
    950: '#000000',
  },
}

SCSS

$custom: #378fa1;
$custom-light: #7bb0bc;
$custom-dark: #000000;

JSON

{
  "hex": "#378fa1",
  "rgb": {
    "r": 55,
    "g": 143,
    "b": 161
  },
  "hsl": {
    "h": 190.189,
    "s": 49.074,
    "l": 42.353
  },
  "oklch": {
    "l": 0.60498,
    "c": 0.08653,
    "h": 213.6
  },
  "luminance": 0.2303
}

Semantic roles & 50–950 ramp

primary

#378FA1

secondary

#BD8377

accent

#674FD9

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #378FA1

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

Preview Lab → · Contrast checker → · Palette generator →