#378FBA#378FBA

#378FBA is a mid, moderate cyan. Relative luminance 0.240; OKLCH L 61.6% C 0.105 H 233.5°. Best body text is #000000 at 5.80:1 contrast (WCAG AA passes).

Color values

HEX	#378FBA
RGB	rgb(55, 143, 186)
HSL	hsl(200, 54%, 47%)
HSV	hsv(200, 70%, 73%)
CMYK	cmyk(70.4%, 23.1%, 0%, 27.1%)
CIE-LAB	lab(56.09, -12.06, -30.02)
CIE-LCH	lch(56.09, 32.35, 248.12°)
OKLab	oklab(61.61% -0.0624 -0.0844)
OKLCH	oklch(61.61% 0.105 233.5)
XYZ	xyz(20.2574, 24.0001, 50.0097)
Luminance	0.2400 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378FBA #BA6237

analogous

#37BAA4 #378FBA #374DBA

triadic

#378FBA #BA378F #8FBA37

tetradic

#378FBA #A437BA #BA6237 #4DBA37

square

#378FBA #A437BA #BA6237 #4DBA37

split-complementary

#378FBA #BA374D #BAA437

monochromatic

#1B465C #296B8B #378FBA #5FABD0 #8EC3DE

Accessibility & contrast

On white

3.62

#378FBA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.80

#378FBA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378FBA

5.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378FBA	#FFFFFF	#000000	##000000
##378FBA	1.00	3.62	5.80	5.80
#FFFFFF	3.62	1.00	21.00	21.00
#000000	5.80	21.00	1.00	1.00
##000000	5.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A8EBC

Deuteranopia (green-blind)

#6881B9

Tritanopia (blue-blind)

#009A9D

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #378fba;
/* rgb */ color: rgb(55, 143, 186);
/* oklch */ color: oklch(61.6% 0.105 233.5);

Tailwind

colors: {
  custom: {
    50: '#7eafcf',
    500: '#378fba',
    950: '#000000',
  },
}

SCSS

$custom: #378fba;
$custom-light: #7eafcf;
$custom-dark: #000000;

JSON

{
  "hex": "#378fba",
  "rgb": {
    "r": 55,
    "g": 143,
    "b": 186
  },
  "hsl": {
    "h": 199.695,
    "s": 54.357,
    "l": 47.255
  },
  "oklch": {
    "l": 0.61614,
    "c": 0.10493,
    "h": 233.5
  },
  "luminance": 0.24002
}

Semantic roles & 50–950 ramp

primary

#378FBA

secondary

#C89B85

accent

#7B4ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378FBA

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

Preview Lab → · Contrast checker → · Palette generator →