#399FB5#399FB5

#399FB5 is a light, moderate cyan. Relative luminance 0.290; OKLCH L 65.3% C 0.097 H 214.9°. Best body text is #000000 at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#399FB5
RGB	rgb(57, 159, 181)
HSL	hsl(191, 52%, 47%)
HSV	hsv(191, 69%, 71%)
CMYK	cmyk(68.5%, 12.2%, 0%, 29%)
CIE-LAB	lab(60.78, -22.01, -19.96)
CIE-LCH	lch(60.78, 29.71, 222.21°)
OKLab	oklab(65.32% -0.0796 -0.0556)
OKLCH	oklch(65.32% 0.097 214.9)
XYZ	xyz(22.4225, 28.9998, 48.1229)
Luminance	0.2900 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399FB5 #B54F39

analogous

#39B58D #399FB5 #3961B5

triadic

#399FB5 #B5399F #9FB539

tetradic

#399FB5 #8D39B5 #B54F39 #61B539

square

#399FB5 #8D39B5 #B54F39 #61B539

split-complementary

#399FB5 #B53961 #B58D39

monochromatic

#1C4D58 #2A7686 #399FB5 #5FB9CD #8DCDDB

Accessibility & contrast

On white

3.09

#399FB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.80

#399FB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399FB5

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399FB5	#FFFFFF	#000000	##000000
##399FB5	1.00	3.09	6.80	6.80
#FFFFFF	3.09	1.00	21.00	21.00
#000000	6.80	21.00	1.00	1.00
##000000	6.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8F9AB6

Deuteranopia (green-blind)

#7E8DB5

Tritanopia (blue-blind)

#00A7A6

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #399fb5;
/* rgb */ color: rgb(57, 159, 181);
/* oklch */ color: oklch(65.3% 0.097 214.9);

Tailwind

colors: {
  custom: {
    50: '#7fbbcb',
    500: '#399fb5',
    950: '#000000',
  },
}

SCSS

$custom: #399fb5;
$custom-light: #7fbbcb;
$custom-dark: #000000;

JSON

{
  "hex": "#399fb5",
  "rgb": {
    "r": 57,
    "g": 159,
    "b": 181
  },
  "hsl": {
    "h": 190.645,
    "s": 52.101,
    "l": 46.667
  },
  "oklch": {
    "l": 0.65321,
    "c": 0.09712,
    "h": 214.9
  },
  "luminance": 0.29002
}

Semantic roles & 50–950 ramp

primary

#399FB5

secondary

#C69084

accent

#664CDC

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1213

muted

#7C8182

Preview Lab

Preview with #399FB5

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

Preview Lab → · Contrast checker → · Palette generator →