#399FBC#399FBC

#399FBC is a light, moderate cyan. Relative luminance 0.293; OKLCH L 65.6% C 0.101 H 220.5°. Best body text is #000000 at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#399FBC
RGB	rgb(57, 159, 188)
HSL	hsl(193, 53%, 48%)
HSV	hsv(193, 70%, 74%)
CMYK	cmyk(69.7%, 15.4%, 0%, 26.3%)
CIE-LAB	lab(61.04, -19.78, -23.50)
CIE-LCH	lch(61.04, 30.72, 229.92°)
OKLab	oklab(65.61% -0.0769 -0.0656)
OKLCH	oklch(65.61% 0.101 220.5)
XYZ	xyz(23.1588, 29.2944, 52.0010)
Luminance	0.2930 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#399FBC #BC5639

analogous

#39BC97 #399FBC #395EBC

triadic

#399FBC #BC399F #9FBC39

tetradic

#399FBC #9739BC #BC5639 #5EBC39

square

#399FBC #9739BC #BC5639 #5EBC39

split-complementary

#399FBC #BC395E #BC9739

monochromatic

#1D505E #2B778D #399FBC #63B7D0 #92CDDE

Accessibility & contrast

On white

3.06

#399FBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.86

#399FBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399FBC

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##399FBC	#FFFFFF	#000000	##000000
##399FBC	1.00	3.06	6.86	6.86
#FFFFFF	3.06	1.00	21.00	21.00
#000000	6.86	21.00	1.00	1.00
##000000	6.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8D9BBE

Deuteranopia (green-blind)

#7B8EBC

Tritanopia (blue-blind)

#00A8A8

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #399fbc;
/* rgb */ color: rgb(57, 159, 188);
/* oklch */ color: oklch(65.6% 0.101 220.5);

Tailwind

colors: {
  custom: {
    50: '#80bbd0',
    500: '#399fbc',
    950: '#000000',
  },
}

SCSS

$custom: #399fbc;
$custom-light: #80bbd0;
$custom-dark: #000000;

JSON

{
  "hex": "#399fbc",
  "rgb": {
    "r": 57,
    "g": 159,
    "b": 188
  },
  "hsl": {
    "h": 193.282,
    "s": 53.469,
    "l": 48.039
  },
  "oklch": {
    "l": 0.65615,
    "c": 0.10106,
    "h": 220.5
  },
  "luminance": 0.29297
}

Semantic roles & 50–950 ramp

primary

#399FBC

secondary

#C99688

accent

#6B4BDD

background

#F8FBFC

surface

#F0F6F9

border

#CBD0D2

text

#0B1214

muted

#7C8182

Preview Lab

Preview with #399FBC

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

Preview Lab → · Contrast checker → · Palette generator →