#378BBD#378BBD

#378BBD is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.8% C 0.110 H 238.6°. Best body text is #000000 at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#378BBD
RGB	rgb(55, 139, 189)
HSL	hsl(202, 55%, 48%)
HSV	hsv(202, 71%, 74%)
CMYK	cmyk(70.9%, 26.5%, 0%, 25.9%)
CIE-LAB	lab(55.02, -8.78, -33.39)
CIE-LCH	lch(55.02, 34.52, 255.27°)
OKLab	oklab(60.81% -0.0573 -0.0941)
OKLCH	oklch(60.81% 0.11 238.6)
XYZ	xyz(19.9899, 22.9494, 51.5104)
Luminance	0.2295 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378BBD #BD6937

analogous

#37BDAC #378BBD #3748BD

triadic

#378BBD #BD378B #8BBD37

tetradic

#378BBD #AC37BD #BD6937 #48BD37

square

#378BBD #AC37BD #BD6937 #48BD37

split-complementary

#378BBD #BD3748 #BDAC37

monochromatic

#1B455E #29688E #378BBD #60A7D1 #90C1DF

Accessibility & contrast

On white

3.76

#378BBD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.59

#378BBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BBD

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378BBD	#FFFFFF	#000000	##000000
##378BBD	1.00	3.76	5.59	5.59
#FFFFFF	3.76	1.00	21.00	21.00
#000000	5.59	21.00	1.00	1.00
##000000	5.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#748BBF

Deuteranopia (green-blind)

#617EBC

Tritanopia (blue-blind)

#00989C

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378bbd;
/* rgb */ color: rgb(55, 139, 189);
/* oklch */ color: oklch(60.8% 0.110 238.6);

Tailwind

colors: {
  custom: {
    50: '#7eacd1',
    500: '#378bbd',
    950: '#000000',
  },
}

SCSS

$custom: #378bbd;
$custom-light: #7eacd1;
$custom-dark: #000000;

JSON

{
  "hex": "#378bbd",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 189
  },
  "hsl": {
    "h": 202.388,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.60808,
    "c": 0.11021,
    "h": 238.6
  },
  "luminance": 0.22952
}

Semantic roles & 50–950 ramp

primary

#378BBD

secondary

#C99F86

accent

#814ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #378BBD

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

Preview Lab → · Contrast checker → · Palette generator →