#378BB8#378BB8

#378BB8 is a mid, moderate cyan. Relative luminance 0.227; OKLCH L 60.6% C 0.105 H 235.8°. Best body text is #000000 at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#378BB8
RGB	rgb(55, 139, 184)
HSL	hsl(201, 54%, 47%)
HSV	hsv(201, 70%, 72%)
CMYK	cmyk(70.1%, 24.5%, 0%, 27.8%)
CIE-LAB	lab(54.80, -10.49, -30.88)
CIE-LCH	lch(54.80, 32.62, 251.23°)
OKLab	oklab(60.56% -0.059 -0.0869)
OKLCH	oklch(60.56% 0.105 235.8)
XYZ	xyz(19.4565, 22.7360, 48.7012)
Luminance	0.2274 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378BB8 #B86437

analogous

#37B8A5 #378BB8 #374BB8

triadic

#378BB8 #B8378B #8BB837

tetradic

#378BB8 #A537B8 #B86437 #4BB837

square

#378BB8 #A537B8 #B86437 #4BB837

split-complementary

#378BB8 #B8374B #B8A537

monochromatic

#1B445A #296789 #378BB8 #5DA7CF #8DC1DD

Accessibility & contrast

On white

3.79

#378BB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.55

#378BB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BB8

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378BB8	#FFFFFF	#000000	##000000
##378BB8	1.00	3.79	5.55	5.55
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.55	21.00	1.00	1.00
##000000	5.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#758ABA

Deuteranopia (green-blind)

#647EB7

Tritanopia (blue-blind)

#00979A

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #378bb8;
/* rgb */ color: rgb(55, 139, 184);
/* oklch */ color: oklch(60.6% 0.105 235.8);

Tailwind

colors: {
  custom: {
    50: '#7daccd',
    500: '#378bb8',
    950: '#000000',
  },
}

SCSS

$custom: #378bb8;
$custom-light: #7daccd;
$custom-dark: #000000;

JSON

{
  "hex": "#378bb8",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 184
  },
  "hsl": {
    "h": 200.93,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.6056,
    "c": 0.10504,
    "h": 235.8
  },
  "luminance": 0.22738
}

Semantic roles & 50–950 ramp

primary

#378BB8

secondary

#C79B84

accent

#7E4ADD

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378BB8

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

Preview Lab → · Contrast checker → · Palette generator →