#6599BC#6599BC

#6599BC is a light, moderate cyan. Relative luminance 0.292; OKLCH L 66.0% C 0.076 H 238.9°. Best body text is #000000 at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#6599BC
RGB	rgb(101, 153, 188)
HSL	hsl(204, 39%, 57%)
HSV	hsv(204, 46%, 74%)
CMYK	cmyk(46.3%, 18.6%, 0%, 26.3%)
CIE-LAB	lab(60.94, -7.76, -23.52)
CIE-LCH	lch(60.94, 24.76, 251.74°)
OKLab	oklab(65.99% -0.0393 -0.0652)
OKLCH	oklch(65.99% 0.076 238.9)
XYZ	xyz(25.8320, 29.1782, 51.8379)
Luminance	0.2918 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6599BC #BC8865

analogous

#65BCB4 #6599BC #656EBC

triadic

#6599BC #BC6599 #99BC65

tetradic

#6599BC #B465BC #BC8865 #6EBC65

square

#6599BC #B465BC #BC8865 #6EBC65

split-complementary

#6599BC #BC656E #BCB465

monochromatic

#335A74 #457B9F #6599BC #90B5CF #BAD1E1

Accessibility & contrast

On white

3.07

#6599BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.84

#6599BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6599BC

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6599BC	#FFFFFF	#000000	##000000
##6599BC	1.00	3.07	6.84	6.84
#FFFFFF	3.07	1.00	21.00	21.00
#000000	6.84	21.00	1.00	1.00
##000000	6.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8998BE

Deuteranopia (green-blind)

#7E8FBB

Tritanopia (blue-blind)

#3FA2A4

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #6599bc;
/* rgb */ color: rgb(101, 153, 188);
/* oklch */ color: oklch(66.0% 0.076 238.9);

Tailwind

colors: {
  custom: {
    50: '#95b7d0',
    500: '#6599bc',
    950: '#000000',
  },
}

SCSS

$custom: #6599bc;
$custom-light: #95b7d0;
$custom-dark: #000000;

JSON

{
  "hex": "#6599bc",
  "rgb": {
    "r": 101,
    "g": 153,
    "b": 188
  },
  "hsl": {
    "h": 204.138,
    "s": 39.367,
    "l": 56.667
  },
  "oklch": {
    "l": 0.65994,
    "c": 0.07619,
    "h": 238.9
  },
  "luminance": 0.2918
}

Semantic roles & 50–950 ramp

primary

#6599BC

secondary

#D0BBAD

accent

#8859CF

background

#F9FBFC

surface

#F2F6F9

border

#CCD0D2

text

#0E1114

muted

#7E8082

Preview Lab

Preview with #6599BC

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

Preview Lab → · Contrast checker → · Palette generator →