#378FB2#378FB2

#378FB2 is a mid, moderate cyan. Relative luminance 0.237; OKLCH L 61.2% C 0.098 H 228.1°. Best body text is #000000 at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#378FB2
RGB	rgb(55, 143, 178)
HSL	hsl(197, 53%, 46%)
HSV	hsv(197, 69%, 70%)
CMYK	cmyk(69.1%, 19.7%, 0%, 30.2%)
CIE-LAB	lab(55.76, -14.74, -25.98)
CIE-LCH	lch(55.76, 29.87, 240.42°)
OKLab	oklab(61.24% -0.0653 -0.0727)
OKLCH	oklch(61.24% 0.098 228.1)
XYZ	xyz(19.4307, 23.6694, 45.6554)
Luminance	0.2367 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378FB2 #B25A37

analogous

#37B297 #378FB2 #3751B2

triadic

#378FB2 #B2378F #8FB237

tetradic

#378FB2 #9737B2 #B25A37 #51B237

square

#378FB2 #9737B2 #B25A37 #51B237

split-complementary

#378FB2 #B23751 #B29737

monochromatic

#1A4454 #296983 #378FB2 #5AACCC #89C3DB

Accessibility & contrast

On white

3.66

#378FB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.73

#378FB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378FB2

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378FB2	#FFFFFF	#000000	##000000
##378FB2	1.00	3.66	5.73	5.73
#FFFFFF	3.66	1.00	21.00	21.00
#000000	5.73	21.00	1.00	1.00
##000000	5.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D8DB4

Deuteranopia (green-blind)

#6C80B2

Tritanopia (blue-blind)

#00999A

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #378fb2;
/* rgb */ color: rgb(55, 143, 178);
/* oklch */ color: oklch(61.2% 0.098 228.1);

Tailwind

colors: {
  custom: {
    50: '#7dafc9',
    500: '#378fb2',
    950: '#000000',
  },
}

SCSS

$custom: #378fb2;
$custom-light: #7dafc9;
$custom-dark: #000000;

JSON

{
  "hex": "#378fb2",
  "rgb": {
    "r": 55,
    "g": 143,
    "b": 178
  },
  "hsl": {
    "h": 197.073,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.61238,
    "c": 0.09777,
    "h": 228.1
  },
  "luminance": 0.23671
}

Semantic roles & 50–950 ramp

primary

#378FB2

secondary

#C59480

accent

#754CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378FB2

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

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