#399BB9#399BB9

#399BB9 is a light, moderate cyan. Relative luminance 0.278; OKLCH L 64.5% C 0.100 H 222.0°. Best body text is #000000 at 6.56:1 contrast (WCAG AA passes).

Color values

HEX	#399BB9
RGB	rgb(57, 155, 185)
HSL	hsl(194, 53%, 47%)
HSV	hsv(194, 69%, 73%)
CMYK	cmyk(69.2%, 16.2%, 0%, 27.5%)
CIE-LAB	lab(59.72, -18.63, -23.84)
CIE-LCH	lch(59.72, 30.26, 232.00°)
OKLab	oklab(64.52% -0.0739 -0.0666)
OKLCH	oklch(64.52% 0.1 222)
XYZ	xyz(22.1621, 27.8128, 50.0900)
Luminance	0.2782 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399BB9 #B95739

analogous

#39B997 #399BB9 #395BB9

triadic

#399BB9 #B9399B #9BB939

tetradic

#399BB9 #9739B9 #B95739 #5BB939

square

#399BB9 #9739B9 #B95739 #5BB939

split-complementary

#399BB9 #B9395B #B99739

monochromatic

#1C4D5B #2B748A #399BB9 #61B5CE #90CBDD

Accessibility & contrast

On white

3.20

#399BB9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.56

#399BB9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399BB9

6.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399BB9	#FFFFFF	#000000	##000000
##399BB9	1.00	3.20	6.56	6.56
#FFFFFF	3.20	1.00	21.00	21.00
#000000	6.56	21.00	1.00	1.00
##000000	6.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8997BB

Deuteranopia (green-blind)

#788AB9

Tritanopia (blue-blind)

#00A4A5

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #399bb9;
/* rgb */ color: rgb(57, 155, 185);
/* oklch */ color: oklch(64.5% 0.100 222.0);

Tailwind

colors: {
  custom: {
    50: '#7fb8ce',
    500: '#399bb9',
    950: '#000000',
  },
}

SCSS

$custom: #399bb9;
$custom-light: #7fb8ce;
$custom-dark: #000000;

JSON

{
  "hex": "#399bb9",
  "rgb": {
    "r": 57,
    "g": 155,
    "b": 185
  },
  "hsl": {
    "h": 194.063,
    "s": 52.893,
    "l": 47.451
  },
  "oklch": {
    "l": 0.64517,
    "c": 0.0995,
    "h": 222
  },
  "luminance": 0.27815
}

Semantic roles & 50–950 ramp

primary

#399BB9

secondary

#C89686

accent

#6D4BDC

background

#F8FBFC

surface

#EFF6F9

border

#CAD0D2

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #399BB9

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

Preview Lab → · Contrast checker → · Palette generator →