#378DB2#378DB2

#378DB2 is a mid, moderate cyan. Relative luminance 0.231; OKLCH L 60.8% C 0.098 H 230.0°. Best body text is #000000 at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#378DB2
RGB	rgb(55, 141, 178)
HSL	hsl(198, 53%, 46%)
HSV	hsv(198, 69%, 70%)
CMYK	cmyk(69.1%, 20.8%, 0%, 30.2%)
CIE-LAB	lab(55.15, -13.64, -26.92)
CIE-LCH	lch(55.15, 30.18, 243.13°)
OKLab	oklab(60.75% -0.0632 -0.0754)
OKLCH	oklch(60.75% 0.098 230)
XYZ	xyz(19.1331, 23.0742, 45.5563)
Luminance	0.2308 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378DB2 #B25C37

analogous

#37B299 #378DB2 #374FB2

triadic

#378DB2 #B2378D #8DB237

tetradic

#378DB2 #9937B2 #B25C37 #4FB237

square

#378DB2 #9937B2 #B25C37 #4FB237

split-complementary

#378DB2 #B2374F #B29937

monochromatic

#1A4354 #296883 #378DB2 #5AAACC #89C2DB

Accessibility & contrast

On white

3.74

#378DB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.62

#378DB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378DB2

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378DB2	#FFFFFF	#000000	##000000
##378DB2	1.00	3.74	5.62	5.62
#FFFFFF	3.74	1.00	21.00	21.00
#000000	5.62	21.00	1.00	1.00
##000000	5.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A8BB4

Deuteranopia (green-blind)

#697FB1

Tritanopia (blue-blind)

#009799

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #378db2;
/* rgb */ color: rgb(55, 141, 178);
/* oklch */ color: oklch(60.8% 0.098 230.0);

Tailwind

colors: {
  custom: {
    50: '#7daec9',
    500: '#378db2',
    950: '#000000',
  },
}

SCSS

$custom: #378db2;
$custom-light: #7daec9;
$custom-dark: #000000;

JSON

{
  "hex": "#378db2",
  "rgb": {
    "r": 55,
    "g": 141,
    "b": 178
  },
  "hsl": {
    "h": 198.049,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.60754,
    "c": 0.09845,
    "h": 230
  },
  "luminance": 0.23076
}

Semantic roles & 50–950 ramp

primary

#378DB2

secondary

#C59580

accent

#774CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378DB2

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

Preview Lab → · Contrast checker → · Palette generator →