#399DC4#399DC4

#399DC4 is a light, moderate cyan. Relative luminance 0.290; OKLCH L 65.5% C 0.107 H 228.0°. Best body text is #000000 at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#399DC4
RGB	rgb(57, 157, 196)
HSL	hsl(197, 55%, 50%)
HSV	hsv(197, 71%, 77%)
CMYK	cmyk(70.9%, 19.9%, 0%, 23.1%)
CIE-LAB	lab(60.75, -16.10, -28.44)
CIE-LCH	lch(60.75, 32.68, 240.48°)
OKLab	oklab(65.49% -0.0718 -0.0797)
OKLCH	oklch(65.49% 0.107 228)
XYZ	xyz(23.7041, 28.9666, 56.5557)
Luminance	0.2897 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399DC4 #C46039

analogous

#39C4A6 #399DC4 #3957C4

triadic

#399DC4 #C4399D #9DC439

tetradic

#399DC4 #A639C4 #C46039 #57C439

square

#399DC4 #A639C4 #C46039 #57C439

split-complementary

#399DC4 #C43957 #C4A639

monochromatic

#1D5165 #2B7795 #399DC4 #67B5D3 #97CCE1

Accessibility & contrast

On white

3.09

#399DC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.79

#399DC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399DC4

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399DC4	#FFFFFF	#000000	##000000
##399DC4	1.00	3.09	6.79	6.79
#FFFFFF	3.09	1.00	21.00	21.00
#000000	6.79	21.00	1.00	1.00
##000000	6.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#889AC6

Deuteranopia (green-blind)

#758DC3

Tritanopia (blue-blind)

#00A8AA

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #399dc4;
/* rgb */ color: rgb(57, 157, 196);
/* oklch */ color: oklch(65.5% 0.107 228.0);

Tailwind

colors: {
  custom: {
    50: '#81bad6',
    500: '#399dc4',
    950: '#000000',
  },
}

SCSS

$custom: #399dc4;
$custom-light: #81bad6;
$custom-dark: #000000;

JSON

{
  "hex": "#399dc4",
  "rgb": {
    "r": 57,
    "g": 157,
    "b": 196
  },
  "hsl": {
    "h": 196.835,
    "s": 54.941,
    "l": 49.608
  },
  "oklch": {
    "l": 0.65487,
    "c": 0.10729,
    "h": 228
  },
  "luminance": 0.28969
}

Semantic roles & 50–950 ramp

primary

#399DC4

secondary

#CC9E8D

accent

#734ADE

background

#F8FBFD

surface

#F0F6FA

border

#CBD0D3

text

#0C1114

muted

#7D8083

Preview Lab

Preview with #399DC4

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

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