#378BBA#378BBA

#378BBA is a mid, moderate cyan. Relative luminance 0.228; OKLCH L 60.7% C 0.107 H 237.0°. Best body text is #000000 at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#378BBA
RGB	rgb(55, 139, 186)
HSL	hsl(202, 54%, 47%)
HSV	hsv(202, 70%, 73%)
CMYK	cmyk(70.4%, 25.3%, 0%, 27.1%)
CIE-LAB	lab(54.89, -9.81, -31.89)
CIE-LCH	lch(54.89, 33.36, 252.90°)
OKLab	oklab(60.66% -0.0584 -0.0898)
OKLCH	oklch(60.66% 0.107 237)
XYZ	xyz(19.6676, 22.8204, 49.8131)
Luminance	0.2282 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378BBA #BA6637

analogous

#37BAA8 #378BBA #3749BA

triadic

#378BBA #BA378B #8BBA37

tetradic

#378BBA #A837BA #BA6637 #49BA37

square

#378BBA #A837BA #BA6637 #49BA37

split-complementary

#378BBA #BA3749 #BAA837

monochromatic

#1B445C #29688B #378BBA #5FA7D0 #8EC1DE

Accessibility & contrast

On white

3.77

#378BBA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.56

#378BBA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BBA

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378BBA	#FFFFFF	#000000	##000000
##378BBA	1.00	3.77	5.56	5.56
#FFFFFF	3.77	1.00	21.00	21.00
#000000	5.56	21.00	1.00	1.00
##000000	5.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#758ABC

Deuteranopia (green-blind)

#637EB9

Tritanopia (blue-blind)

#00979B

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #378bba;
/* rgb */ color: rgb(55, 139, 186);
/* oklch */ color: oklch(60.7% 0.107 237.0);

Tailwind

colors: {
  custom: {
    50: '#7eaccf',
    500: '#378bba',
    950: '#000000',
  },
}

SCSS

$custom: #378bba;
$custom-light: #7eaccf;
$custom-dark: #000000;

JSON

{
  "hex": "#378bba",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 186
  },
  "hsl": {
    "h": 201.527,
    "s": 54.357,
    "l": 47.255
  },
  "oklch": {
    "l": 0.60658,
    "c": 0.10708,
    "h": 237
  },
  "luminance": 0.22823
}

Semantic roles & 50–950 ramp

primary

#378BBA

secondary

#C89D85

accent

#7F4ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378BBA

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

Preview Lab → · Contrast checker → · Palette generator →