#378BB4#378BB4

#378BB4 is a mid, moderate cyan. Relative luminance 0.226; OKLCH L 60.4% C 0.101 H 233.3°. Best body text is #000000 at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#378BB4
RGB	rgb(55, 139, 180)
HSL	hsl(200, 53%, 46%)
HSV	hsv(200, 69%, 71%)
CMYK	cmyk(69.4%, 22.8%, 0%, 29.4%)
CIE-LAB	lab(54.63, -11.85, -28.87)
CIE-LCH	lch(54.63, 31.21, 247.68°)
OKLab	oklab(60.37% -0.0604 -0.0811)
OKLCH	oklch(60.37% 0.101 233.3)
XYZ	xyz(19.0431, 22.5707, 46.5241)
Luminance	0.2257 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378BB4 #B46037

analogous

#37B49E #378BB4 #374CB4

triadic

#378BB4 #B4378B #8BB437

tetradic

#378BB4 #9E37B4 #B46037 #4CB437

square

#378BB4 #9E37B4 #B46037 #4CB437

split-complementary

#378BB4 #B4374C #B49E37

monochromatic

#1A4356 #296785 #378BB4 #5BA8CD #8AC1DB

Accessibility & contrast

On white

3.81

#378BB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.51

#378BB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BB4

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378BB4	#FFFFFF	#000000	##000000
##378BB4	1.00	3.81	5.51	5.51
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.51	21.00	1.00	1.00
##000000	5.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#778AB6

Deuteranopia (green-blind)

#667DB3

Tritanopia (blue-blind)

#009699

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #378bb4;
/* rgb */ color: rgb(55, 139, 180);
/* oklch */ color: oklch(60.4% 0.101 233.3);

Tailwind

colors: {
  custom: {
    50: '#7dacca',
    500: '#378bb4',
    950: '#000000',
  },
}

SCSS

$custom: #378bb4;
$custom-light: #7dacca;
$custom-dark: #000000;

JSON

{
  "hex": "#378bb4",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 180
  },
  "hsl": {
    "h": 199.68,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.60366,
    "c": 0.10113,
    "h": 233.3
  },
  "luminance": 0.22573
}

Semantic roles & 50–950 ramp

primary

#378BB4

secondary

#C69881

accent

#7B4BDD

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378BB4

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

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