#378AD6#378AD6

#378AD6 is a mid, vivid cyan. Relative luminance 0.238; OKLCH L 61.9% C 0.140 H 249.5°. Best body text is #000000 at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#378AD6
RGB	rgb(55, 138, 214)
HSL	hsl(209, 66%, 53%)
HSV	hsv(209, 74%, 84%)
CMYK	cmyk(74.3%, 35.5%, 0%, 16.1%)
CIE-LAB	lab(55.93, 0.62, -46.10)
CIE-LCH	lch(55.93, 46.11, 270.77°)
OKLab	oklab(61.92% -0.0489 -0.1312)
OKLCH	oklch(61.92% 0.14 249.5)
XYZ	xyz(22.7970, 23.8416, 67.0057)
Luminance	0.2384 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#378AD6 #D68337

analogous

#37D6D2 #378AD6 #373BD6

triadic

#378AD6 #D6378A #8AD637

tetradic

#378AD6 #D237D6 #D68337 #3BD637

square

#378AD6 #D237D6 #D68337 #3BD637

split-complementary

#378AD6 #D6373B #D6D237

monochromatic

#194B7A #236BAC #378AD6 #6AA8E0 #9DC5EB

Accessibility & contrast

On white

3.64

#378AD6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.77

#378AD6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378AD6

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##378AD6	#FFFFFF	#000000	##000000
##378AD6	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)

#678ED9

Deuteranopia (green-blind)

#507FD5

Tritanopia (blue-blind)

#009CA6

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #378ad6;
/* rgb */ color: rgb(55, 138, 214);
/* oklch */ color: oklch(61.9% 0.140 249.5);

Tailwind

colors: {
  custom: {
    50: '#82abe3',
    500: '#378ad6',
    950: '#000000',
  },
}

SCSS

$custom: #378ad6;
$custom-light: #82abe3;
$custom-dark: #000000;

JSON

{
  "hex": "#378ad6",
  "rgb": {
    "r": 55,
    "g": 138,
    "b": 214
  },
  "hsl": {
    "h": 208.679,
    "s": 65.975,
    "l": 52.745
  },
  "oklch": {
    "l": 0.61919,
    "c": 0.13999,
    "h": 249.5
  },
  "luminance": 0.23844
}

Semantic roles & 50–950 ramp

primary

#378AD6

secondary

#D7B392

accent

#903FE9

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #378AD6

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

Preview Lab → · Contrast checker → · Palette generator →