#378AC5#378AC5

#378AC5 is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 61.0% C 0.120 H 243.3°. Best body text is #000000 at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#378AC5
RGB	rgb(55, 138, 197)
HSL	hsl(205, 56%, 49%)
HSV	hsv(205, 72%, 77%)
CMYK	cmyk(72.1%, 29.9%, 0%, 22.7%)
CIE-LAB	lab(55.09, -5.42, -37.82)
CIE-LCH	lch(55.09, 38.21, 261.85°)
OKLab	oklab(60.99% -0.0538 -0.107)
OKLCH	oklch(60.99% 0.12 243.3)
XYZ	xyz(20.7382, 23.0181, 56.1625)
Luminance	0.2302 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378AC5 #C57237

analogous

#37C5B9 #378AC5 #3743C5

triadic

#378AC5 #C5378A #8AC537

tetradic

#378AC5 #B937C5 #C57237 #43C537

square

#378AC5 #B937C5 #C57237 #43C537

split-complementary

#378AC5 #C53743 #C5B937

monochromatic

#1C4765 #2A6895 #378AC5 #65A6D4 #95C2E1

Accessibility & contrast

On white

3.75

#378AC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.60

#378AC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378AC5

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378AC5	#FFFFFF	#000000	##000000
##378AC5	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)

#6F8BC8

Deuteranopia (green-blind)

#5B7EC4

Tritanopia (blue-blind)

#00989F

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378ac5;
/* rgb */ color: rgb(55, 138, 197);
/* oklch */ color: oklch(61.0% 0.120 243.3);

Tailwind

colors: {
  custom: {
    50: '#7fabd7',
    500: '#378ac5',
    950: '#000000',
  },
}

SCSS

$custom: #378ac5;
$custom-light: #7fabd7;
$custom-dark: #000000;

JSON

{
  "hex": "#378ac5",
  "rgb": {
    "r": 55,
    "g": 138,
    "b": 197
  },
  "hsl": {
    "h": 204.93,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.60985,
    "c": 0.11976,
    "h": 243.3
  },
  "luminance": 0.2302
}

Semantic roles & 50–950 ramp

primary

#378AC5

secondary

#CDA68B

accent

#8748E0

background

#F8FAFD

surface

#F0F4FA

border

#CBCED3

text

#0B1014

muted

#7C7F83

Preview Lab

Preview with #378AC5

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

Preview Lab → · Contrast checker → · Palette generator →