#378AB0#378AB0

#378AB0 is a mid, moderate cyan. Relative luminance 0.221; OKLCH L 59.9% C 0.098 H 231.5°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#378AB0
RGB	rgb(55, 138, 176)
HSL	hsl(199, 52%, 45%)
HSV	hsv(199, 69%, 69%)
CMYK	cmyk(68.8%, 21.6%, 0%, 31%)
CIE-LAB	lab(54.16, -12.64, -27.31)
CIE-LCH	lch(54.16, 30.09, 245.16°)
OKLab	oklab(59.94% -0.0609 -0.0766)
OKLCH	oklch(59.94% 0.098 231.5)
XYZ	xyz(18.4974, 22.1218, 44.3610)
Luminance	0.2212 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378AB0 #B05D37

analogous

#37B099 #378AB0 #374DB0

triadic

#378AB0 #B0378A #8AB037

tetradic

#378AB0 #9937B0 #B05D37 #4DB037

square

#378AB0 #9937B0 #B05D37 #4DB037

split-complementary

#378AB0 #B0374D #B09937

monochromatic

#1A4153 #286581 #378AB0 #59A7CB #88C0DA

Accessibility & contrast

On white

3.87

#378AB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#378AB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378AB0

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378AB0	#FFFFFF	#000000	##000000
##378AB0	1.00	3.87	5.42	5.42
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7788B2

Deuteranopia (green-blind)

#667CAF

Tritanopia (blue-blind)

#009497

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #378ab0;
/* rgb */ color: rgb(55, 138, 176);
/* oklch */ color: oklch(59.9% 0.098 231.5);

Tailwind

colors: {
  custom: {
    50: '#7cacc7',
    500: '#378ab0',
    950: '#000000',
  },
}

SCSS

$custom: #378ab0;
$custom-light: #7cacc7;
$custom-dark: #000000;

JSON

{
  "hex": "#378ab0",
  "rgb": {
    "r": 55,
    "g": 138,
    "b": 176
  },
  "hsl": {
    "h": 198.843,
    "s": 52.381,
    "l": 45.294
  },
  "oklch": {
    "l": 0.59935,
    "c": 0.09783,
    "h": 231.5
  },
  "luminance": 0.22124
}

Semantic roles & 50–950 ramp

primary

#378AB0

secondary

#C4957F

accent

#794CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378AB0

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

Preview Lab → · Contrast checker → · Palette generator →