#378FB7#378FB7

#378FB7 is a mid, moderate cyan. Relative luminance 0.239; OKLCH L 61.5% C 0.102 H 231.6°. Best body text is #000000 at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#378FB7
RGB	rgb(55, 143, 183)
HSL	hsl(199, 54%, 47%)
HSV	hsv(199, 70%, 72%)
CMYK	cmyk(69.9%, 21.9%, 0%, 28.2%)
CIE-LAB	lab(55.96, -13.07, -28.51)
CIE-LCH	lch(55.96, 31.36, 245.37°)
OKLab	oklab(61.47% -0.0635 -0.08)
OKLCH	oklch(61.47% 0.102 231.6)
XYZ	xyz(19.9419, 23.8738, 48.3477)
Luminance	0.2388 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378FB7 #B75F37

analogous

#37B79F #378FB7 #374FB7

triadic

#378FB7 #B7378F #8FB737

tetradic

#378FB7 #9F37B7 #B75F37 #4FB737

square

#378FB7 #9F37B7 #B75F37 #4FB737

split-complementary

#378FB7 #B7374F #B79F37

monochromatic

#1B4559 #296A88 #378FB7 #5DABCE #8CC3DC

Accessibility & contrast

On white

3.64

#378FB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.78

#378FB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378FB7

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378FB7	#FFFFFF	#000000	##000000
##378FB7	1.00	3.64	5.78	5.78
#FFFFFF	3.64	1.00	21.00	21.00
#000000	5.78	21.00	1.00	1.00
##000000	5.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B8DB9

Deuteranopia (green-blind)

#6981B6

Tritanopia (blue-blind)

#009A9C

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #378fb7;
/* rgb */ color: rgb(55, 143, 183);
/* oklch */ color: oklch(61.5% 0.102 231.6);

Tailwind

colors: {
  custom: {
    50: '#7eafcc',
    500: '#378fb7',
    950: '#000000',
  },
}

SCSS

$custom: #378fb7;
$custom-light: #7eafcc;
$custom-dark: #000000;

JSON

{
  "hex": "#378fb7",
  "rgb": {
    "r": 55,
    "g": 143,
    "b": 183
  },
  "hsl": {
    "h": 198.75,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.61471,
    "c": 0.10213,
    "h": 231.6
  },
  "luminance": 0.23876
}

Semantic roles & 50–950 ramp

primary

#378FB7

secondary

#C79883

accent

#784BDD

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378FB7

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

Preview Lab → · Contrast checker → · Palette generator →