#6399CF#6399CF

#6399CF is a light, moderate cyan. Relative luminance 0.299; OKLCH L 66.7% C 0.099 H 249.5°. Best body text is #000000 at 6.99:1 contrast (WCAG AA passes).

Color values

HEX	#6399CF
RGB	rgb(99, 153, 207)
HSL	hsl(210, 53%, 60%)
HSV	hsv(210, 52%, 81%)
CMYK	cmyk(52.2%, 26.1%, 0%, 18.8%)
CIE-LAB	lab(61.60, -2.60, -33.16)
CIE-LCH	lch(61.60, 33.26, 265.51°)
OKLab	oklab(66.74% -0.0347 -0.0928)
OKLCH	oklch(66.74% 0.099 249.5)
XYZ	xyz(27.7954, 29.9379, 63.3333)
Luminance	0.2994 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6399CF #CF9963

analogous

#63CFCF #6399CF #6363CF

triadic

#6399CF #CF6399 #99CF63

tetradic

#6399CF #CF63CF #CF9963 #63CF63

square

#6399CF #CF63CF #CF9963 #63CF63

split-complementary

#6399CF #CF6363 #CFCF63

monochromatic

#2B5C8C #3A7ABB #6399CF #92B8DD #C1D6EC

Accessibility & contrast

On white

3.01

#6399CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.99

#6399CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6399CF

6.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6399CF	#FFFFFF	#000000	##000000
##6399CF	1.00	3.01	6.99	6.99
#FFFFFF	3.01	1.00	21.00	21.00
#000000	6.99	21.00	1.00	1.00
##000000	6.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#839BD1

Deuteranopia (green-blind)

#7590CE

Tritanopia (blue-blind)

#27A6AC

Achromatopsia (no color)

#959595

Design tokens & code

CSS

--color: #6399cf;
/* rgb */ color: rgb(99, 153, 207);
/* oklch */ color: oklch(66.7% 0.099 249.5);

Tailwind

colors: {
  custom: {
    50: '#96b6de',
    500: '#6399cf',
    950: '#000000',
  },
}

SCSS

$custom: #6399cf;
$custom-light: #96b6de;
$custom-dark: #000000;

JSON

{
  "hex": "#6399cf",
  "rgb": {
    "r": 99,
    "g": 153,
    "b": 207
  },
  "hsl": {
    "h": 210,
    "s": 52.941,
    "l": 60
  },
  "oklch": {
    "l": 0.66741,
    "c": 0.09912,
    "h": 249.5
  },
  "luminance": 0.2994
}

Semantic roles & 50–950 ramp

primary

#6399CF

secondary

#DCC7B2

accent

#944BDC

background

#F9FBFD

surface

#F2F6FB

border

#CCD0D4

text

#0E1115

muted

#7E8083

Preview Lab

Preview with #6399CF

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

Preview Lab → · Contrast checker → · Palette generator →