#378BCA#378BCA

#378BCA is a mid, vivid cyan. Relative luminance 0.235; OKLCH L 61.5% C 0.125 H 244.7°. Best body text is #000000 at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#378BCA
RGB	rgb(55, 139, 202)
HSL	hsl(206, 58%, 50%)
HSV	hsv(206, 73%, 79%)
CMYK	cmyk(72.8%, 31.2%, 0%, 20.8%)
CIE-LAB	lab(55.62, -4.24, -39.82)
CIE-LCH	lch(55.62, 40.04, 263.93°)
OKLab	oklab(61.48% -0.0532 -0.1128)
OKLCH	oklch(61.48% 0.125 244.7)
XYZ	xyz(21.4647, 23.5393, 59.2779)
Luminance	0.2354 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378BCA #CA7637

analogous

#37CABF #378BCA #3741CA

triadic

#378BCA #CA378B #8BCA37

tetradic

#378BCA #BF37CA #CA7637 #41CA37

square

#378BCA #BF37CA #CA7637 #41CA37

split-complementary

#378BCA #CA3741 #CABF37

monochromatic

#1C496A #296A9B #378BCA #67A7D7 #98C3E4

Accessibility & contrast

On white

3.68

#378BCA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.71

#378BCA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378BCA

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378BCA	#FFFFFF	#000000	##000000
##378BCA	1.00	3.68	5.71	5.71
#FFFFFF	3.68	1.00	21.00	21.00
#000000	5.71	21.00	1.00	1.00
##000000	5.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E8DCD

Deuteranopia (green-blind)

#5A7FC9

Tritanopia (blue-blind)

#009AA1

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #378bca;
/* rgb */ color: rgb(55, 139, 202);
/* oklch */ color: oklch(61.5% 0.125 244.7);

Tailwind

colors: {
  custom: {
    50: '#80acda',
    500: '#378bca',
    950: '#000000',
  },
}

SCSS

$custom: #378bca;
$custom-light: #80acda;
$custom-dark: #000000;

JSON

{
  "hex": "#378bca",
  "rgb": {
    "r": 55,
    "g": 139,
    "b": 202
  },
  "hsl": {
    "h": 205.714,
    "s": 58.103,
    "l": 50.392
  },
  "oklch": {
    "l": 0.61484,
    "c": 0.12473,
    "h": 244.7
  },
  "luminance": 0.23542
}

Semantic roles & 50–950 ramp

primary

#378BCA

secondary

#CFAA8E

accent

#8946E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #378BCA

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

Preview Lab → · Contrast checker → · Palette generator →