#378BA4#378BA4

#378BA4 is a mid, moderate cyan. Relative luminance 0.220; OKLCH L 59.6% C 0.088 H 220.9°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#378BA4
RGB	rgb(55, 139, 164)
HSL	hsl(194, 50%, 43%)
HSV	hsv(194, 66%, 64%)
CMYK	cmyk(66.5%, 15.2%, 0%, 35.7%)
CIE-LAB	lab(53.98, -17.16, -20.69)
CIE-LCH	lch(53.98, 26.87, 230.33°)
OKLab	oklab(59.64% -0.0665 -0.0577)
OKLCH	oklch(59.64% 0.088 220.9)
XYZ	xyz(17.5063, 21.9559, 38.4301)
Luminance	0.2196 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378BA4 #A45037

analogous

#37A486 #378BA4 #3755A4

triadic

#378BA4 #A4378B #8BA437

tetradic

#378BA4 #8637A4 #A45037 #55A437

square

#378BA4 #8637A4 #A45037 #55A437

split-complementary

#378BA4 #A43755 #A48637

monochromatic

#183D48 #286476 #378BA4 #53ABC5 #81C1D5

Accessibility & contrast

On white

3.89

#378BA4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.39

#378BA4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BA4

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378BA4	#FFFFFF	#000000	##000000
##378BA4	1.00	3.89	5.39	5.39
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.39	21.00	1.00	1.00
##000000	5.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C87A5

Deuteranopia (green-blind)

#6D7CA4

Tritanopia (blue-blind)

#009393

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #378ba4;
/* rgb */ color: rgb(55, 139, 164);
/* oklch */ color: oklch(59.6% 0.088 220.9);

Tailwind

colors: {
  custom: {
    50: '#7badbf',
    500: '#378ba4',
    950: '#000000',
  },
}

SCSS

$custom: #378ba4;
$custom-light: #7badbf;
$custom-dark: #000000;

JSON

{
  "hex": "#378ba4",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 164
  },
  "hsl": {
    "h": 193.761,
    "s": 49.772,
    "l": 42.941
  },
  "oklch": {
    "l": 0.59635,
    "c": 0.08802,
    "h": 220.9
  },
  "luminance": 0.21958
}

Semantic roles & 50–950 ramp

primary

#378BA4

secondary

#BE8979

accent

#6E4FD9

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #378BA4

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

Preview Lab → · Contrast checker → · Palette generator →