#378FA5#378FA5

#378FA5 is a mid, moderate cyan. Relative luminance 0.232; OKLCH L 60.7% C 0.089 H 217.4°. Best body text is #000000 at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#378FA5
RGB	rgb(55, 143, 165)
HSL	hsl(192, 50%, 43%)
HSV	hsv(192, 67%, 65%)
CMYK	cmyk(66.7%, 13.3%, 0%, 35.3%)
CIE-LAB	lab(55.25, -18.99, -19.32)
CIE-LCH	lch(55.25, 27.09, 225.50°)
OKLab	oklab(60.67% -0.0704 -0.0538)
OKLCH	oklch(60.67% 0.089 217.4)
XYZ	xyz(18.1867, 23.1718, 39.1041)
Luminance	0.2317 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378FA5 #A54D37

analogous

#37A584 #378FA5 #3758A5

triadic

#378FA5 #A5378F #8FA537

tetradic

#378FA5 #8437A5 #A54D37 #58A537

square

#378FA5 #8437A5 #A54D37 #58A537

split-complementary

#378FA5 #A53758 #A58437

monochromatic

#183F49 #286777 #378FA5 #53AFC6 #81C4D5

Accessibility & contrast

On white

3.73

#378FA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.63

#378FA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378FA5

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378FA5	#FFFFFF	#000000	##000000
##378FA5	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)

#818BA6

Deuteranopia (green-blind)

#717FA5

Tritanopia (blue-blind)

#009796

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378fa5;
/* rgb */ color: rgb(55, 143, 165);
/* oklch */ color: oklch(60.7% 0.089 217.4);

Tailwind

colors: {
  custom: {
    50: '#7bb0bf',
    500: '#378fa5',
    950: '#000000',
  },
}

SCSS

$custom: #378fa5;
$custom-light: #7bb0bf;
$custom-dark: #000000;

JSON

{
  "hex": "#378fa5",
  "rgb": {
    "r": 55,
    "g": 143,
    "b": 165
  },
  "hsl": {
    "h": 192,
    "s": 50,
    "l": 43.137
  },
  "oklch": {
    "l": 0.60665,
    "c": 0.08859,
    "h": 217.4
  },
  "luminance": 0.23174
}

Semantic roles & 50–950 ramp

primary

#378FA5

secondary

#BF8779

accent

#6A4EDA

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #378FA5

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

Preview Lab → · Contrast checker → · Palette generator →