#399CC4#399CC4

#399CC4 is a light, moderate cyan. Relative luminance 0.286; OKLCH L 65.2% C 0.108 H 228.9°. Best body text is #000000 at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#399CC4
RGB	rgb(57, 156, 196)
HSL	hsl(197, 55%, 50%)
HSV	hsv(197, 71%, 77%)
CMYK	cmyk(70.9%, 20.4%, 0%, 23.1%)
CIE-LAB	lab(60.45, -15.56, -28.90)
CIE-LCH	lch(60.45, 32.82, 241.70°)
OKLab	oklab(65.25% -0.0708 -0.081)
OKLCH	oklch(65.25% 0.108 228.9)
XYZ	xyz(23.5356, 28.6296, 56.4995)
Luminance	0.2863 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399CC4 #C46139

analogous

#39C4A7 #399CC4 #3957C4

triadic

#399CC4 #C4399C #9CC439

tetradic

#399CC4 #A739C4 #C46139 #57C439

square

#399CC4 #A739C4 #C46139 #57C439

split-complementary

#399CC4 #C43957 #C4A739

monochromatic

#1D5165 #2B7695 #399CC4 #67B4D3 #97CBE1

Accessibility & contrast

On white

3.12

#399CC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.73

#399CC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399CC4

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399CC4	#FFFFFF	#000000	##000000
##399CC4	1.00	3.12	6.73	6.73
#FFFFFF	3.12	1.00	21.00	21.00
#000000	6.73	21.00	1.00	1.00
##000000	6.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#879AC6

Deuteranopia (green-blind)

#748CC3

Tritanopia (blue-blind)

#00A7A9

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #399cc4;
/* rgb */ color: rgb(57, 156, 196);
/* oklch */ color: oklch(65.2% 0.108 228.9);

Tailwind

colors: {
  custom: {
    50: '#81b9d6',
    500: '#399cc4',
    950: '#000000',
  },
}

SCSS

$custom: #399cc4;
$custom-light: #81b9d6;
$custom-dark: #000000;

JSON

{
  "hex": "#399cc4",
  "rgb": {
    "r": 57,
    "g": 156,
    "b": 196
  },
  "hsl": {
    "h": 197.266,
    "s": 54.941,
    "l": 49.608
  },
  "oklch": {
    "l": 0.65248,
    "c": 0.10762,
    "h": 228.9
  },
  "luminance": 0.28632
}

Semantic roles & 50–950 ramp

primary

#399CC4

secondary

#CC9F8D

accent

#744ADE

background

#F8FBFD

surface

#F0F6FA

border

#CBD0D3

text

#0C1114

muted

#7D8083

Preview Lab

Preview with #399CC4

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

Preview Lab → · Contrast checker → · Palette generator →