#378BB6#378BB6

#378BB6 is a mid, moderate cyan. Relative luminance 0.227; OKLCH L 60.5% C 0.103 H 234.6°. Best body text is #000000 at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#378BB6
RGB	rgb(55, 139, 182)
HSL	hsl(200, 54%, 46%)
HSV	hsv(200, 70%, 71%)
CMYK	cmyk(69.8%, 23.6%, 0%, 28.6%)
CIE-LAB	lab(54.71, -11.17, -29.88)
CIE-LCH	lch(54.71, 31.90, 249.49°)
OKLab	oklab(60.46% -0.0597 -0.084)
OKLCH	oklch(60.46% 0.103 234.6)
XYZ	xyz(19.2483, 22.6527, 47.6049)
Luminance	0.2266 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378BB6 #B66237

analogous

#37B6A2 #378BB6 #374CB6

triadic

#378BB6 #B6378B #8BB637

tetradic

#378BB6 #A237B6 #B66237 #4CB637

square

#378BB6 #A237B6 #B66237 #4CB637

split-complementary

#378BB6 #B6374C #B6A237

monochromatic

#1B4358 #296787 #378BB6 #5CA7CE #8BC1DC

Accessibility & contrast

On white

3.80

#378BB6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.53

#378BB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BB6

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378BB6	#FFFFFF	#000000	##000000
##378BB6	1.00	3.80	5.53	5.53
#FFFFFF	3.80	1.00	21.00	21.00
#000000	5.53	21.00	1.00	1.00
##000000	5.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#768AB8

Deuteranopia (green-blind)

#657DB5

Tritanopia (blue-blind)

#009699

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #378bb6;
/* rgb */ color: rgb(55, 139, 182);
/* oklch */ color: oklch(60.5% 0.103 234.6);

Tailwind

colors: {
  custom: {
    50: '#7daccc',
    500: '#378bb6',
    950: '#000000',
  },
}

SCSS

$custom: #378bb6;
$custom-light: #7daccc;
$custom-dark: #000000;

JSON

{
  "hex": "#378bb6",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 182
  },
  "hsl": {
    "h": 200.315,
    "s": 53.586,
    "l": 46.471
  },
  "oklch": {
    "l": 0.60462,
    "c": 0.10306,
    "h": 234.6
  },
  "luminance": 0.22655
}

Semantic roles & 50–950 ramp

primary

#378BB6

secondary

#C69982

accent

#7C4BDD

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378BB6

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

Preview Lab → · Contrast checker → · Palette generator →