#378BA5#378BA5

#378BA5 is a mid, moderate cyan. Relative luminance 0.220; OKLCH L 59.7% C 0.089 H 221.8°. Best body text is #000000 at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#378BA5
RGB	rgb(55, 139, 165)
HSL	hsl(194, 50%, 43%)
HSV	hsv(194, 67%, 65%)
CMYK	cmyk(66.7%, 15.8%, 0%, 35.3%)
CIE-LAB	lab(54.02, -16.83, -21.20)
CIE-LCH	lch(54.02, 27.07, 231.55°)
OKLab	oklab(59.68% -0.0661 -0.0591)
OKLCH	oklch(59.68% 0.089 221.8)
XYZ	xyz(17.5969, 21.9922, 38.9075)
Luminance	0.2199 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378BA5 #A55137

analogous

#37A588 #378BA5 #3754A5

triadic

#378BA5 #A5378B #8BA537

tetradic

#378BA5 #8837A5 #A55137 #54A537

square

#378BA5 #8837A5 #A55137 #54A537

split-complementary

#378BA5 #A53754 #A58837

monochromatic

#183E49 #286477 #378BA5 #53ABC6 #81C1D5

Accessibility & contrast

On white

3.89

#378BA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.40

#378BA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BA5

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378BA5	#FFFFFF	#000000	##000000
##378BA5	1.00	3.89	5.40	5.40
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.40	21.00	1.00	1.00
##000000	5.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C88A6

Deuteranopia (green-blind)

#6C7CA5

Tritanopia (blue-blind)

#009393

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #378ba5;
/* rgb */ color: rgb(55, 139, 165);
/* oklch */ color: oklch(59.7% 0.089 221.8);

Tailwind

colors: {
  custom: {
    50: '#7badbf',
    500: '#378ba5',
    950: '#000000',
  },
}

SCSS

$custom: #378ba5;
$custom-light: #7badbf;
$custom-dark: #000000;

JSON

{
  "hex": "#378ba5",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 165
  },
  "hsl": {
    "h": 194.182,
    "s": 50,
    "l": 43.137
  },
  "oklch": {
    "l": 0.59679,
    "c": 0.0887,
    "h": 221.8
  },
  "luminance": 0.21994
}

Semantic roles & 50–950 ramp

primary

#378BA5

secondary

#BF8A79

accent

#6F4EDA

background

#F8FAFB

surface

#EFF4F7

border

#CACED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #378BA5

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

Preview Lab → · Contrast checker → · Palette generator →