#378FB6#378FB6

#378FB6 is a mid, moderate cyan. Relative luminance 0.238; OKLCH L 61.4% C 0.101 H 230.9°. Best body text is #000000 at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#378FB6
RGB	rgb(55, 143, 182)
HSL	hsl(198, 54%, 46%)
HSV	hsv(198, 70%, 71%)
CMYK	cmyk(69.8%, 21.4%, 0%, 28.6%)
CIE-LAB	lab(55.92, -13.41, -28.01)
CIE-LCH	lch(55.92, 31.05, 244.42°)
OKLab	oklab(61.42% -0.0638 -0.0786)
OKLCH	oklch(61.42% 0.101 230.9)
XYZ	xyz(19.8381, 23.8323, 47.8015)
Luminance	0.2384 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378FB6 #B65E37

analogous

#37B69E #378FB6 #3750B6

triadic

#378FB6 #B6378F #8FB637

tetradic

#378FB6 #9E37B6 #B65E37 #50B637

square

#378FB6 #9E37B6 #B65E37 #50B637

split-complementary

#378FB6 #B63750 #B69E37

monochromatic

#1B4558 #296A87 #378FB6 #5CABCE #8BC3DC

Accessibility & contrast

On white

3.64

#378FB6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.77

#378FB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378FB6

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378FB6	#FFFFFF	#000000	##000000
##378FB6	1.00	3.64	5.77	5.77
#FFFFFF	3.64	1.00	21.00	21.00
#000000	5.77	21.00	1.00	1.00
##000000	5.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B8DB8

Deuteranopia (green-blind)

#6A80B5

Tritanopia (blue-blind)

#009A9C

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #378fb6;
/* rgb */ color: rgb(55, 143, 182);
/* oklch */ color: oklch(61.4% 0.101 230.9);

Tailwind

colors: {
  custom: {
    50: '#7dafcc',
    500: '#378fb6',
    950: '#000000',
  },
}

SCSS

$custom: #378fb6;
$custom-light: #7dafcc;
$custom-dark: #000000;

JSON

{
  "hex": "#378fb6",
  "rgb": {
    "r": 55,
    "g": 143,
    "b": 182
  },
  "hsl": {
    "h": 198.425,
    "s": 53.586,
    "l": 46.471
  },
  "oklch": {
    "l": 0.61424,
    "c": 0.10123,
    "h": 230.9
  },
  "luminance": 0.23835
}

Semantic roles & 50–950 ramp

primary

#378FB6

secondary

#C69782

accent

#784BDD

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378FB6

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

Preview Lab → · Contrast checker → · Palette generator →