#378AB2#378AB2

#378AB2 is a mid, moderate cyan. Relative luminance 0.222; OKLCH L 60.0% C 0.100 H 232.9°. Best body text is #000000 at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#378AB2
RGB	rgb(55, 138, 178)
HSL	hsl(200, 53%, 46%)
HSV	hsv(200, 69%, 70%)
CMYK	cmyk(69.1%, 22.5%, 0%, 30.2%)
CIE-LAB	lab(54.24, -11.97, -28.32)
CIE-LCH	lch(54.24, 30.75, 247.09°)
OKLab	oklab(60.03% -0.0601 -0.0795)
OKLCH	oklch(60.03% 0.1 232.9)
XYZ	xyz(18.6967, 22.2015, 45.4108)
Luminance	0.2220 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378AB2 #B25F37

analogous

#37B29C #378AB2 #374CB2

triadic

#378AB2 #B2378A #8AB237

tetradic

#378AB2 #9C37B2 #B25F37 #4CB237

square

#378AB2 #9C37B2 #B25F37 #4CB237

split-complementary

#378AB2 #B2374C #B29C37

monochromatic

#1A4254 #296683 #378AB2 #5AA7CC #89C0DB

Accessibility & contrast

On white

3.86

#378AB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.44

#378AB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378AB2

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378AB2	#FFFFFF	#000000	##000000
##378AB2	1.00	3.86	5.44	5.44
#FFFFFF	3.86	1.00	21.00	21.00
#000000	5.44	21.00	1.00	1.00
##000000	5.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7689B4

Deuteranopia (green-blind)

#657CB1

Tritanopia (blue-blind)

#009597

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #378ab2;
/* rgb */ color: rgb(55, 138, 178);
/* oklch */ color: oklch(60.0% 0.100 232.9);

Tailwind

colors: {
  custom: {
    50: '#7dacc9',
    500: '#378ab2',
    950: '#000000',
  },
}

SCSS

$custom: #378ab2;
$custom-light: #7dacc9;
$custom-dark: #000000;

JSON

{
  "hex": "#378ab2",
  "rgb": {
    "r": 55,
    "g": 138,
    "b": 178
  },
  "hsl": {
    "h": 199.512,
    "s": 52.79,
    "l": 45.686
  },
  "oklch": {
    "l": 0.6003,
    "c": 0.09969,
    "h": 232.9
  },
  "luminance": 0.22204
}

Semantic roles & 50–950 ramp

primary

#378AB2

secondary

#C59680

accent

#7B4CDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378AB2

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

Preview Lab → · Contrast checker → · Palette generator →