#399BD1#399BD1

#399BD1 is a light, vivid cyan. Relative luminance 0.289; OKLCH L 65.6% C 0.120 H 237.1°. Best body text is #000000 at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#399BD1
RGB	rgb(57, 155, 209)
HSL	hsl(201, 62%, 52%)
HSV	hsv(201, 73%, 82%)
CMYK	cmyk(72.7%, 25.8%, 0%, 18%)
CIE-LAB	lab(60.70, -10.64, -35.79)
CIE-LCH	lch(60.70, 37.33, 253.44°)
OKLab	oklab(65.63% -0.0653 -0.1009)
OKLCH	oklch(65.63% 0.12 237.1)
XYZ	xyz(24.9128, 28.9131, 64.5771)
Luminance	0.2892 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399BD1 #D16F39

analogous

#39D1BB #399BD1 #394FD1

triadic

#399BD1 #D1399B #9BD139

tetradic

#399BD1 #BB39D1 #D16F39 #4FD139

square

#399BD1 #BB39D1 #D16F39 #4FD139

split-complementary

#399BD1 #D1394F #D1BB39

monochromatic

#1B5575 #2779A6 #399BD1 #6BB4DD #9CCDE8

Accessibility & contrast

On white

3.10

#399BD1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.78

#399BD1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399BD1

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399BD1	#FFFFFF	#000000	##000000
##399BD1	1.00	3.10	6.78	6.78
#FFFFFF	3.10	1.00	21.00	21.00
#000000	6.78	21.00	1.00	1.00
##000000	6.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#819BD3

Deuteranopia (green-blind)

#6D8CD0

Tritanopia (blue-blind)

#00A9AE

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #399bd1;
/* rgb */ color: rgb(57, 155, 209);
/* oklch */ color: oklch(65.6% 0.120 237.1);

Tailwind

colors: {
  custom: {
    50: '#83b8df',
    500: '#399bd1',
    950: '#000000',
  },
}

SCSS

$custom: #399bd1;
$custom-light: #83b8df;
$custom-dark: #000000;

JSON

{
  "hex": "#399bd1",
  "rgb": {
    "r": 57,
    "g": 155,
    "b": 209
  },
  "hsl": {
    "h": 201.316,
    "s": 62.295,
    "l": 52.157
  },
  "oklch": {
    "l": 0.65629,
    "c": 0.12019,
    "h": 237.1
  },
  "luminance": 0.28916
}

Semantic roles & 50–950 ramp

primary

#399BD1

secondary

#D4A992

accent

#7C42E5

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #399BD1

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

Preview Lab → · Contrast checker → · Palette generator →