#6599BB#6599BB

#6599BB is a light, moderate cyan. Relative luminance 0.291; OKLCH L 66.0% C 0.075 H 238.1°. Best body text is #000000 at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#6599BB
RGB	rgb(101, 153, 187)
HSL	hsl(204, 39%, 56%)
HSV	hsv(204, 46%, 73%)
CMYK	cmyk(46%, 18.2%, 0%, 26.7%)
CIE-LAB	lab(60.90, -8.04, -23.01)
CIE-LCH	lch(60.90, 24.38, 250.73°)
OKLab	oklab(65.95% -0.0397 -0.0638)
OKLCH	oklch(65.95% 0.075 238.1)
XYZ	xyz(25.7246, 29.1352, 51.2722)
Luminance	0.2914 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6599BB #BB8765

analogous

#65BBB2 #6599BB #656EBB

triadic

#6599BB #BB6599 #99BB65

tetradic

#6599BB #B265BB #BB8765 #6EBB65

square

#6599BB #B265BB #BB8765 #6EBB65

split-complementary

#6599BB #BB656E #BBB265

monochromatic

#335A73 #457B9D #6599BB #8FB5CE #BAD1E0

Accessibility & contrast

On white

3.08

#6599BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.83

#6599BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6599BB

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6599BB	#FFFFFF	#000000	##000000
##6599BB	1.00	3.08	6.83	6.83
#FFFFFF	3.08	1.00	21.00	21.00
#000000	6.83	21.00	1.00	1.00
##000000	6.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8A98BD

Deuteranopia (green-blind)

#7E8FBA

Tritanopia (blue-blind)

#3FA2A4

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #6599bb;
/* rgb */ color: rgb(101, 153, 187);
/* oklch */ color: oklch(66.0% 0.075 238.1);

Tailwind

colors: {
  custom: {
    50: '#95b7cf',
    500: '#6599bb',
    950: '#000000',
  },
}

SCSS

$custom: #6599bb;
$custom-light: #95b7cf;
$custom-dark: #000000;

JSON

{
  "hex": "#6599bb",
  "rgb": {
    "r": 101,
    "g": 153,
    "b": 187
  },
  "hsl": {
    "h": 203.721,
    "s": 38.739,
    "l": 56.471
  },
  "oklch": {
    "l": 0.65951,
    "c": 0.07515,
    "h": 238.1
  },
  "luminance": 0.29137
}

Semantic roles & 50–950 ramp

primary

#6599BB

secondary

#D0BAAC

accent

#8859CF

background

#F9FBFC

surface

#F2F6F9

border

#CCD0D2

text

#0E1113

muted

#7E8082

Preview Lab

Preview with #6599BB

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

Preview Lab → · Contrast checker → · Palette generator →