#378CCA#378CCA

#378CCA is a mid, vivid cyan. Relative luminance 0.238; OKLCH L 61.7% C 0.124 H 244.1°. Best body text is #000000 at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#378CCA
RGB	rgb(55, 140, 202)
HSL	hsl(205, 58%, 50%)
HSV	hsv(205, 73%, 79%)
CMYK	cmyk(72.8%, 30.7%, 0%, 20.8%)
CIE-LAB	lab(55.92, -4.82, -39.36)
CIE-LCH	lch(55.92, 39.65, 263.02°)
OKLab	oklab(61.72% -0.0542 -0.1114)
OKLCH	oklch(61.72% 0.124 244.1)
XYZ	xyz(21.6102, 23.8302, 59.3264)
Luminance	0.2383 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378CCA #CA7537

analogous

#37CABE #378CCA #3742CA

triadic

#378CCA #CA378C #8CCA37

tetradic

#378CCA #BE37CA #CA7537 #42CA37

square

#378CCA #BE37CA #CA7537 #42CA37

split-complementary

#378CCA #CA3742 #CABE37

monochromatic

#1C496A #296B9B #378CCA #67A8D7 #98C4E4

Accessibility & contrast

On white

3.64

#378CCA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.77

#378CCA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378CCA

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378CCA	#FFFFFF	#000000	##000000
##378CCA	1.00	3.64	5.77	5.77
#FFFFFF	3.64	1.00	21.00	21.00
#000000	5.77	21.00	1.00	1.00
##000000	5.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#708ECD

Deuteranopia (green-blind)

#5B80C9

Tritanopia (blue-blind)

#009BA2

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #378cca;
/* rgb */ color: rgb(55, 140, 202);
/* oklch */ color: oklch(61.7% 0.124 244.1);

Tailwind

colors: {
  custom: {
    50: '#80adda',
    500: '#378cca',
    950: '#000000',
  },
}

SCSS

$custom: #378cca;
$custom-light: #80adda;
$custom-dark: #000000;

JSON

{
  "hex": "#378cca",
  "rgb": {
    "r": 55,
    "g": 140,
    "b": 202
  },
  "hsl": {
    "h": 205.306,
    "s": 58.103,
    "l": 50.392
  },
  "oklch": {
    "l": 0.61716,
    "c": 0.12392,
    "h": 244.1
  },
  "luminance": 0.23833
}

Semantic roles & 50–950 ramp

primary

#378CCA

secondary

#CFA98E

accent

#8846E1

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #378CCA

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

Preview Lab → · Contrast checker → · Palette generator →