#399DB3#399DB3

#399DB3 is a light, moderate cyan. Relative luminance 0.282; OKLCH L 64.8% C 0.096 H 215.2°. Best body text is #000000 at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#399DB3
RGB	rgb(57, 157, 179)
HSL	hsl(191, 52%, 46%)
HSV	hsv(191, 68%, 70%)
CMYK	cmyk(68.2%, 12.3%, 0%, 29.8%)
CIE-LAB	lab(60.10, -21.60, -19.87)
CIE-LCH	lch(60.10, 29.35, 222.62°)
OKLab	oklab(64.75% -0.0784 -0.0553)
OKLCH	oklch(64.75% 0.096 215.2)
XYZ	xyz(21.8776, 28.2360, 46.9362)
Luminance	0.2824 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399DB3 #B34F39

analogous

#39B38C #399DB3 #3960B3

triadic

#399DB3 #B3399D #9DB339

tetradic

#399DB3 #8C39B3 #B34F39 #60B339

square

#399DB3 #8C39B3 #B34F39 #60B339

split-complementary

#399DB3 #B33960 #B38C39

monochromatic

#1B4C56 #2A7485 #399DB3 #5EB8CC #8CCCDA

Accessibility & contrast

On white

3.16

#399DB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.65

#399DB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399DB3

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399DB3	#FFFFFF	#000000	##000000
##399DB3	1.00	3.16	6.65	6.65
#FFFFFF	3.16	1.00	21.00	21.00
#000000	6.65	21.00	1.00	1.00
##000000	6.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8E98B4

Deuteranopia (green-blind)

#7C8BB3

Tritanopia (blue-blind)

#00A5A4

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #399db3;
/* rgb */ color: rgb(57, 157, 179);
/* oklch */ color: oklch(64.8% 0.096 215.2);

Tailwind

colors: {
  custom: {
    50: '#7fbac9',
    500: '#399db3',
    950: '#000000',
  },
}

SCSS

$custom: #399db3;
$custom-light: #7fbac9;
$custom-dark: #000000;

JSON

{
  "hex": "#399db3",
  "rgb": {
    "r": 57,
    "g": 157,
    "b": 179
  },
  "hsl": {
    "h": 190.82,
    "s": 51.695,
    "l": 46.275
  },
  "oklch": {
    "l": 0.6475,
    "c": 0.09594,
    "h": 215.2
  },
  "luminance": 0.28238
}

Semantic roles & 50–950 ramp

primary

#399DB3

secondary

#C58F83

accent

#664DDB

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #399DB3

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

Preview Lab → · Contrast checker → · Palette generator →