#378CB8#378CB8

#378CB8 is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.8% C 0.104 H 234.9°. Best body text is #000000 at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#378CB8
RGB	rgb(55, 140, 184)
HSL	hsl(200, 54%, 47%)
HSV	hsv(200, 70%, 72%)
CMYK	cmyk(70.1%, 23.9%, 0%, 27.8%)
CIE-LAB	lab(55.10, -11.06, -30.42)
CIE-LCH	lch(55.10, 32.36, 250.02°)
OKLab	oklab(60.8% -0.0601 -0.0855)
OKLCH	oklch(60.8% 0.105 234.9)
XYZ	xyz(19.6020, 23.0269, 48.7497)
Luminance	0.2303 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378CB8 #B86337

analogous

#37B8A4 #378CB8 #374CB8

triadic

#378CB8 #B8378C #8CB837

tetradic

#378CB8 #A437B8 #B86337 #4CB837

square

#378CB8 #A437B8 #B86337 #4CB837

split-complementary

#378CB8 #B8374C #B8A437

monochromatic

#1B445A #296889 #378CB8 #5DA8CF #8DC1DD

Accessibility & contrast

On white

3.75

#378CB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.61

#378CB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378CB8

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378CB8	#FFFFFF	#000000	##000000
##378CB8	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)

#778BBA

Deuteranopia (green-blind)

#657EB7

Tritanopia (blue-blind)

#00989B

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378cb8;
/* rgb */ color: rgb(55, 140, 184);
/* oklch */ color: oklch(60.8% 0.104 234.9);

Tailwind

colors: {
  custom: {
    50: '#7dadcd',
    500: '#378cb8',
    950: '#000000',
  },
}

SCSS

$custom: #378cb8;
$custom-light: #7dadcd;
$custom-dark: #000000;

JSON

{
  "hex": "#378cb8",
  "rgb": {
    "r": 55,
    "g": 140,
    "b": 184
  },
  "hsl": {
    "h": 200.465,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.60799,
    "c": 0.1045,
    "h": 234.9
  },
  "luminance": 0.23029
}

Semantic roles & 50–950 ramp

primary

#378CB8

secondary

#C79B84

accent

#7D4ADD

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378CB8

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

Preview Lab → · Contrast checker → · Palette generator →