#378DB4#378DB4

#378DB4 is a mid, moderate cyan. Relative luminance 0.232; OKLCH L 60.8% C 0.100 H 231.4°. Best body text is #000000 at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#378DB4
RGB	rgb(55, 141, 180)
HSL	hsl(199, 53%, 46%)
HSV	hsv(199, 69%, 71%)
CMYK	cmyk(69.4%, 21.7%, 0%, 29.4%)
CIE-LAB	lab(55.23, -12.97, -27.93)
CIE-LCH	lch(55.23, 30.79, 245.09°)
OKLab	oklab(60.85% -0.0625 -0.0784)
OKLCH	oklch(60.85% 0.1 231.4)
XYZ	xyz(19.3354, 23.1551, 46.6215)
Luminance	0.2316 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378DB4 #B45E37

analogous

#37B49C #378DB4 #374EB4

triadic

#378DB4 #B4378D #8DB437

tetradic

#378DB4 #9C37B4 #B45E37 #4EB437

square

#378DB4 #9C37B4 #B45E37 #4EB437

split-complementary

#378DB4 #B4374E #B49C37

monochromatic

#1A4456 #296885 #378DB4 #5BA9CD #8AC2DB

Accessibility & contrast

On white

3.73

#378DB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.63

#378DB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378DB4

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378DB4	#FFFFFF	#000000	##000000
##378DB4	1.00	3.73	5.63	5.63
#FFFFFF	3.73	1.00	21.00	21.00
#000000	5.63	21.00	1.00	1.00
##000000	5.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#798BB6

Deuteranopia (green-blind)

#687FB3

Tritanopia (blue-blind)

#00989A

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378db4;
/* rgb */ color: rgb(55, 141, 180);
/* oklch */ color: oklch(60.8% 0.100 231.4);

Tailwind

colors: {
  custom: {
    50: '#7daeca',
    500: '#378db4',
    950: '#000000',
  },
}

SCSS

$custom: #378db4;
$custom-light: #7daeca;
$custom-dark: #000000;

JSON

{
  "hex": "#378db4",
  "rgb": {
    "r": 55,
    "g": 141,
    "b": 180
  },
  "hsl": {
    "h": 198.72,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.60848,
    "c": 0.10024,
    "h": 231.4
  },
  "luminance": 0.23157
}

Semantic roles & 50–950 ramp

primary

#378DB4

secondary

#C69781

accent

#794BDD

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378DB4

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

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