#399CB5#399CB5

#399CB5 is a light, moderate cyan. Relative luminance 0.280; OKLCH L 64.6% C 0.097 H 217.9°. Best body text is #000000 at 6.60:1 contrast (WCAG AA passes).

Color values

HEX	#399CB5
RGB	rgb(57, 156, 181)
HSL	hsl(192, 52%, 47%)
HSV	hsv(192, 69%, 71%)
CMYK	cmyk(68.5%, 13.8%, 0%, 29%)
CIE-LAB	lab(59.87, -20.44, -21.35)
CIE-LCH	lch(59.87, 29.56, 226.25°)
OKLab	oklab(64.59% -0.0766 -0.0595)
OKLCH	oklch(64.59% 0.097 217.9)
XYZ	xyz(21.9128, 27.9805, 47.9530)
Luminance	0.2798 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399CB5 #B55239

analogous

#39B590 #399CB5 #395EB5

triadic

#399CB5 #B5399C #9CB539

tetradic

#399CB5 #9039B5 #B55239 #5EB539

square

#399CB5 #9039B5 #B55239 #5EB539

split-complementary

#399CB5 #B5395E #B59039

monochromatic

#1C4C58 #2A7486 #399CB5 #5FB6CD #8DCBDB

Accessibility & contrast

On white

3.18

#399CB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.60

#399CB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399CB5

6.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399CB5	#FFFFFF	#000000	##000000
##399CB5	1.00	3.18	6.60	6.60
#FFFFFF	3.18	1.00	21.00	21.00
#000000	6.60	21.00	1.00	1.00
##000000	6.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8C98B6

Deuteranopia (green-blind)

#7A8BB5

Tritanopia (blue-blind)

#00A5A4

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #399cb5;
/* rgb */ color: rgb(57, 156, 181);
/* oklch */ color: oklch(64.6% 0.097 217.9);

Tailwind

colors: {
  custom: {
    50: '#7fb9cb',
    500: '#399cb5',
    950: '#000000',
  },
}

SCSS

$custom: #399cb5;
$custom-light: #7fb9cb;
$custom-dark: #000000;

JSON

{
  "hex": "#399cb5",
  "rgb": {
    "r": 57,
    "g": 156,
    "b": 181
  },
  "hsl": {
    "h": 192.097,
    "s": 52.101,
    "l": 46.667
  },
  "oklch": {
    "l": 0.64589,
    "c": 0.09696,
    "h": 217.9
  },
  "luminance": 0.27983
}

Semantic roles & 50–950 ramp

primary

#399CB5

secondary

#C69184

accent

#694CDC

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #399CB5

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

Preview Lab → · Contrast checker → · Palette generator →