#378CB6#378CB6

#378CB6 is a mid, moderate cyan. Relative luminance 0.229; OKLCH L 60.7% C 0.103 H 233.7°. Best body text is #000000 at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#378CB6
RGB	rgb(55, 140, 182)
HSL	hsl(200, 54%, 46%)
HSV	hsv(200, 70%, 71%)
CMYK	cmyk(69.8%, 23.1%, 0%, 28.6%)
CIE-LAB	lab(55.01, -11.74, -29.41)
CIE-LCH	lch(55.01, 31.66, 248.25°)
OKLab	oklab(60.7% -0.0608 -0.0826)
OKLCH	oklch(60.7% 0.103 233.7)
XYZ	xyz(19.3938, 22.9436, 47.6534)
Luminance	0.2295 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378CB6 #B66137

analogous

#37B6A1 #378CB6 #374DB6

triadic

#378CB6 #B6378C #8CB637

tetradic

#378CB6 #A137B6 #B66137 #4DB637

square

#378CB6 #A137B6 #B66137 #4DB637

split-complementary

#378CB6 #B6374D #B6A137

monochromatic

#1B4458 #296887 #378CB6 #5CA8CE #8BC1DC

Accessibility & contrast

On white

3.76

#378CB6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.59

#378CB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378CB6

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378CB6	#FFFFFF	#000000	##000000
##378CB6	1.00	3.76	5.59	5.59
#FFFFFF	3.76	1.00	21.00	21.00
#000000	5.59	21.00	1.00	1.00
##000000	5.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#778BB8

Deuteranopia (green-blind)

#667EB5

Tritanopia (blue-blind)

#00979A

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378cb6;
/* rgb */ color: rgb(55, 140, 182);
/* oklch */ color: oklch(60.7% 0.103 233.7);

Tailwind

colors: {
  custom: {
    50: '#7dadcc',
    500: '#378cb6',
    950: '#000000',
  },
}

SCSS

$custom: #378cb6;
$custom-light: #7dadcc;
$custom-dark: #000000;

JSON

{
  "hex": "#378cb6",
  "rgb": {
    "r": 55,
    "g": 140,
    "b": 182
  },
  "hsl": {
    "h": 199.843,
    "s": 53.586,
    "l": 46.471
  },
  "oklch": {
    "l": 0.60702,
    "c": 0.10256,
    "h": 233.7
  },
  "luminance": 0.22946
}

Semantic roles & 50–950 ramp

primary

#378CB6

secondary

#C69982

accent

#7B4BDD

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378CB6

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

Preview Lab → · Contrast checker → · Palette generator →