#378EB6#378EB6

#378EB6 is a mid, moderate cyan. Relative luminance 0.235; OKLCH L 61.2% C 0.102 H 231.8°. Best body text is #000000 at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#378EB6
RGB	rgb(55, 142, 182)
HSL	hsl(199, 54%, 46%)
HSV	hsv(199, 70%, 71%)
CMYK	cmyk(69.8%, 22%, 0%, 28.6%)
CIE-LAB	lab(55.62, -12.85, -28.47)
CIE-LCH	lch(55.62, 31.24, 245.71°)
OKLab	oklab(61.18% -0.0628 -0.0799)
OKLCH	oklch(61.18% 0.102 231.8)
XYZ	xyz(19.6887, 23.5334, 47.7517)
Luminance	0.2354 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378EB6 #B65F37

analogous

#37B69F #378EB6 #374FB6

triadic

#378EB6 #B6378E #8EB637

tetradic

#378EB6 #9F37B6 #B65F37 #4FB637

square

#378EB6 #9F37B6 #B65F37 #4FB637

split-complementary

#378EB6 #B6374F #B69F37

monochromatic

#1B4558 #296987 #378EB6 #5CAACE #8BC3DC

Accessibility & contrast

On white

3.68

#378EB6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.71

#378EB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378EB6

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378EB6	#FFFFFF	#000000	##000000
##378EB6	1.00	3.68	5.71	5.71
#FFFFFF	3.68	1.00	21.00	21.00
#000000	5.71	21.00	1.00	1.00
##000000	5.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A8CB8

Deuteranopia (green-blind)

#6980B5

Tritanopia (blue-blind)

#00999B

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #378eb6;
/* rgb */ color: rgb(55, 142, 182);
/* oklch */ color: oklch(61.2% 0.102 231.8);

Tailwind

colors: {
  custom: {
    50: '#7dafcc',
    500: '#378eb6',
    950: '#000000',
  },
}

SCSS

$custom: #378eb6;
$custom-light: #7dafcc;
$custom-dark: #000000;

JSON

{
  "hex": "#378eb6",
  "rgb": {
    "r": 55,
    "g": 142,
    "b": 182
  },
  "hsl": {
    "h": 198.898,
    "s": 53.586,
    "l": 46.471
  },
  "oklch": {
    "l": 0.61183,
    "c": 0.10164,
    "h": 231.8
  },
  "luminance": 0.23536
}

Semantic roles & 50–950 ramp

primary

#378EB6

secondary

#C69882

accent

#794BDD

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378EB6

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

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