#378AC4#378AC4

#378AC4 is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.9% C 0.119 H 242.9°. Best body text is #000000 at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#378AC4
RGB	rgb(55, 138, 196)
HSL	hsl(205, 56%, 49%)
HSV	hsv(205, 72%, 77%)
CMYK	cmyk(71.9%, 29.6%, 0%, 23.1%)
CIE-LAB	lab(55.04, -5.77, -37.33)
CIE-LCH	lch(55.04, 37.77, 261.22°)
OKLab	oklab(60.93% -0.0541 -0.1056)
OKLCH	oklch(60.93% 0.119 242.9)
XYZ	xyz(20.6240, 22.9724, 55.5610)
Luminance	0.2298 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378AC4 #C47137

analogous

#37C4B8 #378AC4 #3744C4

triadic

#378AC4 #C4378A #8AC437

tetradic

#378AC4 #B837C4 #C47137 #44C437

square

#378AC4 #B837C4 #C47137 #44C437

split-complementary

#378AC4 #C43744 #C4B837

monochromatic

#1C4764 #2A6894 #378AC4 #65A6D4 #94C2E1

Accessibility & contrast

On white

3.75

#378AC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.60

#378AC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378AC4

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378AC4	#FFFFFF	#000000	##000000
##378AC4	1.00	3.75	5.60	5.60
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.60	21.00	1.00	1.00
##000000	5.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F8BC7

Deuteranopia (green-blind)

#5C7EC3

Tritanopia (blue-blind)

#00989E

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378ac4;
/* rgb */ color: rgb(55, 138, 196);
/* oklch */ color: oklch(60.9% 0.119 242.9);

Tailwind

colors: {
  custom: {
    50: '#7facd6',
    500: '#378ac4',
    950: '#000000',
  },
}

SCSS

$custom: #378ac4;
$custom-light: #7facd6;
$custom-dark: #000000;

JSON

{
  "hex": "#378ac4",
  "rgb": {
    "r": 55,
    "g": 138,
    "b": 196
  },
  "hsl": {
    "h": 204.681,
    "s": 56.175,
    "l": 49.216
  },
  "oklch": {
    "l": 0.60932,
    "c": 0.11862,
    "h": 242.9
  },
  "luminance": 0.22975
}

Semantic roles & 50–950 ramp

primary

#378AC4

secondary

#CCA68B

accent

#8748DF

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0B1014

muted

#7C7F83

Preview Lab

Preview with #378AC4

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

Preview Lab → · Contrast checker → · Palette generator →