#378FB9#378FB9

#378FB9 is a mid, moderate cyan. Relative luminance 0.240; OKLCH L 61.6% C 0.104 H 232.9°. Best body text is #000000 at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#378FB9
RGB	rgb(55, 143, 185)
HSL	hsl(199, 54%, 47%)
HSV	hsv(199, 70%, 73%)
CMYK	cmyk(70.3%, 22.7%, 0%, 27.5%)
CIE-LAB	lab(56.05, -12.40, -29.52)
CIE-LCH	lch(56.05, 32.02, 247.22°)
OKLab	oklab(61.57% -0.0628 -0.0829)
OKLCH	oklch(61.57% 0.104 232.9)
XYZ	xyz(20.1515, 23.9577, 49.4518)
Luminance	0.2396 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378FB9 #B96137

analogous

#37B9A2 #378FB9 #374EB9

triadic

#378FB9 #B9378F #8FB937

tetradic

#378FB9 #A237B9 #B96137 #4EB937

square

#378FB9 #A237B9 #B96137 #4EB937

split-complementary

#378FB9 #B9374E #B9A237

monochromatic

#1B465B #296B8A #378FB9 #5EABCF #8DC3DD

Accessibility & contrast

On white

3.63

#378FB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.79

#378FB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378FB9

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378FB9	#FFFFFF	#000000	##000000
##378FB9	1.00	3.63	5.79	5.79
#FFFFFF	3.63	1.00	21.00	21.00
#000000	5.79	21.00	1.00	1.00
##000000	5.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A8EBB

Deuteranopia (green-blind)

#6881B8

Tritanopia (blue-blind)

#009A9D

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #378fb9;
/* rgb */ color: rgb(55, 143, 185);
/* oklch */ color: oklch(61.6% 0.104 232.9);

Tailwind

colors: {
  custom: {
    50: '#7eafce',
    500: '#378fb9',
    950: '#000000',
  },
}

SCSS

$custom: #378fb9;
$custom-light: #7eafce;
$custom-dark: #000000;

JSON

{
  "hex": "#378fb9",
  "rgb": {
    "r": 55,
    "g": 143,
    "b": 185
  },
  "hsl": {
    "h": 199.385,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.61566,
    "c": 0.10399,
    "h": 232.9
  },
  "luminance": 0.2396
}

Semantic roles & 50–950 ramp

primary

#378FB9

secondary

#C89A84

accent

#7A4ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378FB9

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

Preview Lab → · Contrast checker → · Palette generator →