#378CB4#378CB4

#378CB4 is a mid, moderate cyan. Relative luminance 0.229; OKLCH L 60.6% C 0.101 H 232.4°. Best body text is #000000 at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#378CB4
RGB	rgb(55, 140, 180)
HSL	hsl(199, 53%, 46%)
HSV	hsv(199, 69%, 71%)
CMYK	cmyk(69.4%, 22.2%, 0%, 29.4%)
CIE-LAB	lab(54.93, -12.41, -28.40)
CIE-LCH	lch(54.93, 30.99, 246.39°)
OKLab	oklab(60.61% -0.0615 -0.0797)
OKLCH	oklch(60.61% 0.101 232.4)
XYZ	xyz(19.1886, 22.8616, 46.5726)
Luminance	0.2286 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378CB4 #B45F37

analogous

#37B49D #378CB4 #374DB4

triadic

#378CB4 #B4378C #8CB437

tetradic

#378CB4 #9D37B4 #B45F37 #4DB437

square

#378CB4 #9D37B4 #B45F37 #4DB437

split-complementary

#378CB4 #B4374D #B49D37

monochromatic

#1A4356 #296885 #378CB4 #5BA9CD #8AC1DB

Accessibility & contrast

On white

3.77

#378CB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.57

#378CB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378CB4

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378CB4	#FFFFFF	#000000	##000000
##378CB4	1.00	3.77	5.57	5.57
#FFFFFF	3.77	1.00	21.00	21.00
#000000	5.57	21.00	1.00	1.00
##000000	5.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#788AB6

Deuteranopia (green-blind)

#677EB3

Tritanopia (blue-blind)

#009799

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #378cb4;
/* rgb */ color: rgb(55, 140, 180);
/* oklch */ color: oklch(60.6% 0.101 232.4);

Tailwind

colors: {
  custom: {
    50: '#7dadca',
    500: '#378cb4',
    950: '#000000',
  },
}

SCSS

$custom: #378cb4;
$custom-light: #7dadca;
$custom-dark: #000000;

JSON

{
  "hex": "#378cb4",
  "rgb": {
    "r": 55,
    "g": 140,
    "b": 180
  },
  "hsl": {
    "h": 199.2,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.60607,
    "c": 0.10067,
    "h": 232.4
  },
  "luminance": 0.22864
}

Semantic roles & 50–950 ramp

primary

#378CB4

secondary

#C69781

accent

#7A4BDD

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #378CB4

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

Preview Lab → · Contrast checker → · Palette generator →