#399BB7#399BB7

#399BB7 is a light, moderate cyan. Relative luminance 0.277; OKLCH L 64.4% C 0.098 H 220.4°. Best body text is #000000 at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#399BB7
RGB	rgb(57, 155, 183)
HSL	hsl(193, 53%, 47%)
HSV	hsv(193, 69%, 72%)
CMYK	cmyk(68.9%, 15.3%, 0%, 28.2%)
CIE-LAB	lab(59.64, -19.27, -22.83)
CIE-LCH	lch(59.64, 29.88, 229.83°)
OKLab	oklab(64.43% -0.0747 -0.0637)
OKLCH	oklch(64.43% 0.098 220.4)
XYZ	xyz(21.9524, 27.7290, 48.9858)
Luminance	0.2773 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399BB7 #B75539

analogous

#39B794 #399BB7 #395CB7

triadic

#399BB7 #B7399B #9BB739

tetradic

#399BB7 #9439B7 #B75539 #5CB739

square

#399BB7 #9439B7 #B75539 #5CB739

split-complementary

#399BB7 #B7395C #B79439

monochromatic

#1C4C5A #2A7388 #399BB7 #60B5CD #8ECBDC

Accessibility & contrast

On white

3.21

#399BB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.55

#399BB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399BB7

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399BB7	#FFFFFF	#000000	##000000
##399BB7	1.00	3.21	6.55	6.55
#FFFFFF	3.21	1.00	21.00	21.00
#000000	6.55	21.00	1.00	1.00
##000000	6.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8A97B8

Deuteranopia (green-blind)

#788AB7

Tritanopia (blue-blind)

#00A4A4

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #399bb7;
/* rgb */ color: rgb(57, 155, 183);
/* oklch */ color: oklch(64.4% 0.098 220.4);

Tailwind

colors: {
  custom: {
    50: '#7fb8cc',
    500: '#399bb7',
    950: '#000000',
  },
}

SCSS

$custom: #399bb7;
$custom-light: #7fb8cc;
$custom-dark: #000000;

JSON

{
  "hex": "#399bb7",
  "rgb": {
    "r": 57,
    "g": 155,
    "b": 183
  },
  "hsl": {
    "h": 193.333,
    "s": 52.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.64431,
    "c": 0.09819,
    "h": 220.4
  },
  "luminance": 0.27731
}

Semantic roles & 50–950 ramp

primary

#399BB7

secondary

#C79485

accent

#6C4CDC

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0B1113

muted

#7C8082

Preview Lab

Preview with #399BB7

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

Preview Lab → · Contrast checker → · Palette generator →