#399BC4#399BC4

#399BC4 is a light, moderate cyan. Relative luminance 0.283; OKLCH L 65.0% C 0.108 H 229.7°. Best body text is #000000 at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#399BC4
RGB	rgb(57, 155, 196)
HSL	hsl(198, 55%, 50%)
HSV	hsv(198, 71%, 77%)
CMYK	cmyk(70.9%, 20.9%, 0%, 23.1%)
CIE-LAB	lab(60.15, -15.02, -29.36)
CIE-LCH	lch(60.15, 32.98, 242.91°)
OKLab	oklab(65.01% -0.0698 -0.0824)
OKLCH	oklch(65.01% 0.108 229.7)
XYZ	xyz(23.3685, 28.2954, 56.4438)
Luminance	0.2830 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399BC4 #C46239

analogous

#39C4A8 #399BC4 #3955C4

triadic

#399BC4 #C4399B #9BC439

tetradic

#399BC4 #A839C4 #C46239 #55C439

square

#399BC4 #A839C4 #C46239 #55C439

split-complementary

#399BC4 #C43955 #C4A839

monochromatic

#1D5065 #2B7695 #399BC4 #67B3D3 #97CBE1

Accessibility & contrast

On white

3.15

#399BC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.66

#399BC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399BC4

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399BC4	#FFFFFF	#000000	##000000
##399BC4	1.00	3.15	6.66	6.66
#FFFFFF	3.15	1.00	21.00	21.00
#000000	6.66	21.00	1.00	1.00
##000000	6.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8699C6

Deuteranopia (green-blind)

#738BC3

Tritanopia (blue-blind)

#00A6A9

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #399bc4;
/* rgb */ color: rgb(57, 155, 196);
/* oklch */ color: oklch(65.0% 0.108 229.7);

Tailwind

colors: {
  custom: {
    50: '#81b8d6',
    500: '#399bc4',
    950: '#000000',
  },
}

SCSS

$custom: #399bc4;
$custom-light: #81b8d6;
$custom-dark: #000000;

JSON

{
  "hex": "#399bc4",
  "rgb": {
    "r": 57,
    "g": 155,
    "b": 196
  },
  "hsl": {
    "h": 197.698,
    "s": 54.941,
    "l": 49.608
  },
  "oklch": {
    "l": 0.6501,
    "c": 0.10797,
    "h": 229.7
  },
  "luminance": 0.28298
}

Semantic roles & 50–950 ramp

primary

#399BC4

secondary

#CC9F8D

accent

#754ADE

background

#F8FBFD

surface

#F0F6FA

border

#CBD0D3

text

#0C1114

muted

#7D8083

Preview Lab

Preview with #399BC4

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

Preview Lab → · Contrast checker → · Palette generator →