#378CAF#378CAF

#378CAF is a mid, moderate cyan. Relative luminance 0.227; OKLCH L 60.4% C 0.096 H 228.8°. Best body text is #000000 at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#378CAF
RGB	rgb(55, 140, 175)
HSL	hsl(198, 52%, 45%)
HSV	hsv(198, 69%, 69%)
CMYK	cmyk(68.6%, 20%, 0%, 31.4%)
CIE-LAB	lab(54.72, -14.09, -25.86)
CIE-LCH	lch(54.72, 29.45, 241.42°)
OKLab	oklab(60.37% -0.0633 -0.0724)
OKLCH	oklch(60.37% 0.096 228.8)
XYZ	xyz(18.6884, 22.6615, 43.9383)
Luminance	0.2266 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378CAF #AF5A37

analogous

#37AF96 #378CAF #3750AF

triadic

#378CAF #AF378C #8CAF37

tetradic

#378CAF #9637AF #AF5A37 #50AF37

square

#378CAF #9637AF #AF5A37 #50AF37

split-complementary

#378CAF #AF3750 #AF9637

monochromatic

#1A4152 #286780 #378CAF #59A9CB #87C1D9

Accessibility & contrast

On white

3.80

#378CAF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.53

#378CAF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378CAF

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378CAF	#FFFFFF	#000000	##000000
##378CAF	1.00	3.80	5.53	5.53
#FFFFFF	3.80	1.00	21.00	21.00
#000000	5.53	21.00	1.00	1.00
##000000	5.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A8AB1

Deuteranopia (green-blind)

#697EAF

Tritanopia (blue-blind)

#009698

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #378caf;
/* rgb */ color: rgb(55, 140, 175);
/* oklch */ color: oklch(60.4% 0.096 228.8);

Tailwind

colors: {
  custom: {
    50: '#7cadc7',
    500: '#378caf',
    950: '#000000',
  },
}

SCSS

$custom: #378caf;
$custom-light: #7cadc7;
$custom-dark: #000000;

JSON

{
  "hex": "#378caf",
  "rgb": {
    "r": 55,
    "g": 140,
    "b": 175
  },
  "hsl": {
    "h": 197.5,
    "s": 52.174,
    "l": 45.098
  },
  "oklch": {
    "l": 0.60373,
    "c": 0.0962,
    "h": 228.8
  },
  "luminance": 0.22664
}

Semantic roles & 50–950 ramp

primary

#378CAF

secondary

#C3937F

accent

#764CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378CAF

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

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