#399DD1#399DD1

#399DD1 is a light, moderate cyan. Relative luminance 0.296; OKLCH L 66.1% C 0.119 H 235.6°. Best body text is #000000 at 6.92:1 contrast (WCAG AA passes).

Color values

HEX	#399DD1
RGB	rgb(57, 157, 209)
HSL	hsl(201, 62%, 52%)
HSV	hsv(201, 73%, 82%)
CMYK	cmyk(72.7%, 24.9%, 0%, 18%)
CIE-LAB	lab(61.29, -11.75, -34.87)
CIE-LCH	lch(61.29, 36.79, 251.38°)
OKLab	oklab(66.1% -0.0672 -0.0982)
OKLCH	oklch(66.1% 0.119 235.6)
XYZ	xyz(25.2484, 29.5843, 64.6889)
Luminance	0.2959 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399DD1 #D16D39

analogous

#39D1B9 #399DD1 #3951D1

triadic

#399DD1 #D1399D #9DD139

tetradic

#399DD1 #B939D1 #D16D39 #51D139

square

#399DD1 #B939D1 #D16D39 #51D139

split-complementary

#399DD1 #D13951 #D1B939

monochromatic

#1B5675 #277BA6 #399DD1 #6BB6DD #9CCEE8

Accessibility & contrast

On white

3.04

#399DD1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.92

#399DD1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399DD1

6.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399DD1	#FFFFFF	#000000	##000000
##399DD1	1.00	3.04	6.92	6.92
#FFFFFF	3.04	1.00	21.00	21.00
#000000	6.92	21.00	1.00	1.00
##000000	6.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#849CD3

Deuteranopia (green-blind)

#6F8ED0

Tritanopia (blue-blind)

#00ABAF

Achromatopsia (no color)

#949494

Design tokens & code

CSS

--color: #399dd1;
/* rgb */ color: rgb(57, 157, 209);
/* oklch */ color: oklch(66.1% 0.119 235.6);

Tailwind

colors: {
  custom: {
    50: '#83b9df',
    500: '#399dd1',
    950: '#000000',
  },
}

SCSS

$custom: #399dd1;
$custom-light: #83b9df;
$custom-dark: #000000;

JSON

{
  "hex": "#399dd1",
  "rgb": {
    "r": 57,
    "g": 157,
    "b": 209
  },
  "hsl": {
    "h": 200.526,
    "s": 62.295,
    "l": 52.157
  },
  "oklch": {
    "l": 0.66098,
    "c": 0.11903,
    "h": 235.6
  },
  "luminance": 0.29587
}

Semantic roles & 50–950 ramp

primary

#399DD1

secondary

#D4A892

accent

#7A42E5

background

#F8FBFD

surface

#F0F6FB

border

#CBD0D4

text

#0C1115

muted

#7D8083

Preview Lab

Preview with #399DD1

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

Preview Lab → · Contrast checker → · Palette generator →