#378AAA#378AAA

#378AAA is a mid, moderate cyan. Relative luminance 0.219; OKLCH L 59.7% C 0.093 H 227.1°. Best body text is #000000 at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#378AAA
RGB	rgb(55, 138, 170)
HSL	hsl(197, 51%, 44%)
HSV	hsv(197, 68%, 67%)
CMYK	cmyk(67.6%, 18.8%, 0%, 33.3%)
CIE-LAB	lab(53.91, -14.65, -24.25)
CIE-LCH	lch(53.91, 28.33, 238.87°)
OKLab	oklab(59.66% -0.0631 -0.0678)
OKLCH	oklch(59.66% 0.093 227.1)
XYZ	xyz(17.9168, 21.8895, 41.3033)
Luminance	0.2189 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378AAA #AA5737

analogous

#37AA91 #378AAA #3751AA

triadic

#378AAA #AA378A #8AAA37

tetradic

#378AAA #9137AA #AA5737 #51AA37

square

#378AAA #9137AA #AA5737 #51AA37

split-complementary

#378AAA #AA3751 #AA9137

monochromatic

#193F4E #28647C #378AAA #56A8C8 #84C0D7

Accessibility & contrast

On white

3.90

#378AAA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.38

#378AAA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378AAA

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378AAA	#FFFFFF	#000000	##000000
##378AAA	1.00	3.90	5.38	5.38
#FFFFFF	3.90	1.00	21.00	21.00
#000000	5.38	21.00	1.00	1.00
##000000	5.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7987AC

Deuteranopia (green-blind)

#697CAA

Tritanopia (blue-blind)

#009394

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #378aaa;
/* rgb */ color: rgb(55, 138, 170);
/* oklch */ color: oklch(59.7% 0.093 227.1);

Tailwind

colors: {
  custom: {
    50: '#7bacc3',
    500: '#378aaa',
    950: '#000000',
  },
}

SCSS

$custom: #378aaa;
$custom-light: #7bacc3;
$custom-dark: #000000;

JSON

{
  "hex": "#378aaa",
  "rgb": {
    "r": 55,
    "g": 138,
    "b": 170
  },
  "hsl": {
    "h": 196.696,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.59657,
    "c": 0.09263,
    "h": 227.1
  },
  "luminance": 0.21891
}

Semantic roles & 50–950 ramp

primary

#378AAA

secondary

#C18F7C

accent

#754DDB

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #378AAA

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

Preview Lab → · Contrast checker → · Palette generator →