#399DB5#399DB5

#399DB5 is a light, moderate cyan. Relative luminance 0.283; OKLCH L 64.8% C 0.097 H 216.9°. Best body text is #000000 at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#399DB5
RGB	rgb(57, 157, 181)
HSL	hsl(192, 52%, 47%)
HSV	hsv(192, 69%, 71%)
CMYK	cmyk(68.5%, 13.3%, 0%, 29%)
CIE-LAB	lab(60.17, -20.97, -20.89)
CIE-LCH	lch(60.17, 29.60, 224.90°)
OKLab	oklab(64.83% -0.0776 -0.0582)
OKLCH	oklch(64.83% 0.097 216.9)
XYZ	xyz(22.0813, 28.3175, 48.0092)
Luminance	0.2832 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399DB5 #B55139

analogous

#39B58F #399DB5 #395FB5

triadic

#399DB5 #B5399D #9DB539

tetradic

#399DB5 #8F39B5 #B55139 #5FB539

square

#399DB5 #8F39B5 #B55139 #5FB539

split-complementary

#399DB5 #B5395F #B58F39

monochromatic

#1C4C58 #2A7586 #399DB5 #5FB7CD #8DCCDB

Accessibility & contrast

On white

3.15

#399DB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.66

#399DB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399DB5

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399DB5	#FFFFFF	#000000	##000000
##399DB5	1.00	3.15	6.66	6.66
#FFFFFF	3.15	1.00	21.00	21.00
#000000	6.66	21.00	1.00	1.00
##000000	6.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8D98B6

Deuteranopia (green-blind)

#7C8BB5

Tritanopia (blue-blind)

#00A6A4

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #399db5;
/* rgb */ color: rgb(57, 157, 181);
/* oklch */ color: oklch(64.8% 0.097 216.9);

Tailwind

colors: {
  custom: {
    50: '#7fbacb',
    500: '#399db5',
    950: '#000000',
  },
}

SCSS

$custom: #399db5;
$custom-light: #7fbacb;
$custom-dark: #000000;

JSON

{
  "hex": "#399db5",
  "rgb": {
    "r": 57,
    "g": 157,
    "b": 181
  },
  "hsl": {
    "h": 191.613,
    "s": 52.101,
    "l": 46.667
  },
  "oklch": {
    "l": 0.64833,
    "c": 0.09698,
    "h": 216.9
  },
  "luminance": 0.2832
}

Semantic roles & 50–950 ramp

primary

#399DB5

secondary

#C69184

accent

#684CDC

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #399DB5

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

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