#378CB0#378CB0

#378CB0 is a mid, moderate cyan. Relative luminance 0.227; OKLCH L 60.4% C 0.097 H 229.6°. Best body text is #000000 at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#378CB0
RGB	rgb(55, 140, 176)
HSL	hsl(198, 52%, 45%)
HSV	hsv(198, 69%, 69%)
CMYK	cmyk(68.8%, 20.5%, 0%, 31%)
CIE-LAB	lab(54.76, -13.76, -26.37)
CIE-LCH	lch(54.76, 29.74, 242.45°)
OKLab	oklab(60.42% -0.063 -0.0739)
OKLCH	oklch(60.42% 0.097 229.6)
XYZ	xyz(18.7870, 22.7009, 44.4575)
Luminance	0.2270 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378CB0 #B05B37

analogous

#37B097 #378CB0 #3750B0

triadic

#378CB0 #B0378C #8CB037

tetradic

#378CB0 #9737B0 #B05B37 #50B037

square

#378CB0 #9737B0 #B05B37 #50B037

split-complementary

#378CB0 #B03750 #B09737

monochromatic

#1A4253 #286781 #378CB0 #59A9CB #88C1DA

Accessibility & contrast

On white

3.79

#378CB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.54

#378CB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378CB0

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378CB0	#FFFFFF	#000000	##000000
##378CB0	1.00	3.79	5.54	5.54
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.54	21.00	1.00	1.00
##000000	5.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A8AB2

Deuteranopia (green-blind)

#697EB0

Tritanopia (blue-blind)

#009698

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #378cb0;
/* rgb */ color: rgb(55, 140, 176);
/* oklch */ color: oklch(60.4% 0.097 229.6);

Tailwind

colors: {
  custom: {
    50: '#7cadc7',
    500: '#378cb0',
    950: '#000000',
  },
}

SCSS

$custom: #378cb0;
$custom-light: #7cadc7;
$custom-dark: #000000;

JSON

{
  "hex": "#378cb0",
  "rgb": {
    "r": 55,
    "g": 140,
    "b": 176
  },
  "hsl": {
    "h": 197.851,
    "s": 52.381,
    "l": 45.294
  },
  "oklch": {
    "l": 0.60419,
    "c": 0.09706,
    "h": 229.6
  },
  "luminance": 0.22703
}

Semantic roles & 50–950 ramp

primary

#378CB0

secondary

#C4947F

accent

#774CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378CB0

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

Preview Lab → · Contrast checker → · Palette generator →