#6399BE#6399BE

#6399BE is a light, moderate cyan. Relative luminance 0.292; OKLCH L 66.0% C 0.080 H 239.5°. Best body text is #000000 at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#6399BE
RGB	rgb(99, 153, 190)
HSL	hsl(204, 41%, 57%)
HSV	hsv(204, 48%, 75%)
CMYK	cmyk(47.9%, 19.5%, 0%, 25.5%)
CIE-LAB	lab(60.91, -7.67, -24.69)
CIE-LCH	lch(60.91, 25.85, 252.74°)
OKLab	oklab(65.97% -0.0404 -0.0686)
OKLCH	oklch(65.97% 0.08 239.5)
XYZ	xyz(25.8278, 29.1509, 52.9709)
Luminance	0.2915 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6399BE #BE8863

analogous

#63BEB6 #6399BE #636CBE

triadic

#6399BE #BE6399 #99BE63

tetradic

#6399BE #B663BE #BE8863 #6CBE63

square

#6399BE #B663BE #BE8863 #6CBE63

split-complementary

#6399BE #BE636C #BEB663

monochromatic

#315A76 #437BA1 #6399BE #8EB5D0 #B9D1E2

Accessibility & contrast

On white

3.07

#6399BE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.83

#6399BE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6399BE

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6399BE	#FFFFFF	#000000	##000000
##6399BE	1.00	3.07	6.83	6.83
#FFFFFF	3.07	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)

#8998C0

Deuteranopia (green-blind)

#7C8FBD

Tritanopia (blue-blind)

#38A2A5

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #6399be;
/* rgb */ color: rgb(99, 153, 190);
/* oklch */ color: oklch(66.0% 0.080 239.5);

Tailwind

colors: {
  custom: {
    50: '#94b7d1',
    500: '#6399be',
    950: '#000000',
  },
}

SCSS

$custom: #6399be;
$custom-light: #94b7d1;
$custom-dark: #000000;

JSON

{
  "hex": "#6399be",
  "rgb": {
    "r": 99,
    "g": 153,
    "b": 190
  },
  "hsl": {
    "h": 204.396,
    "s": 41.176,
    "l": 56.667
  },
  "oklch": {
    "l": 0.65973,
    "c": 0.0796,
    "h": 239.5
  },
  "luminance": 0.29153
}

Semantic roles & 50–950 ramp

primary

#6399BE

secondary

#D1BBAC

accent

#8857D1

background

#F9FBFC

surface

#F2F6F9

border

#CCD0D2

text

#0E1114

muted

#7E8082

Preview Lab

Preview with #6399BE

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

Preview Lab → · Contrast checker → · Palette generator →