#6399FF#6399FF

#6399FF is a light, vivid blue. Relative luminance 0.327; OKLCH L 69.3% C 0.161 H 262.0°. Best body text is #000000 at 7.53:1 contrast (WCAG AA passes).

Color values

HEX	#6399FF
RGB	rgb(99, 153, 255)
HSL	hsl(219, 100%, 69%)
HSV	hsv(219, 61%, 100%)
CMYK	cmyk(61.2%, 40%, 0%, 0%)
CIE-LAB	lab(63.88, 12.64, -56.08)
CIE-LCH	lch(63.88, 57.49, 282.70°)
OKLab	oklab(69.26% -0.0224 -0.1596)
OKLCH	oklch(69.26% 0.161 262)
XYZ	xyz(34.5805, 32.6520, 99.0685)
Luminance	0.3266 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6399FF #FFC963

analogous

#63E7FF #6399FF #7B63FF

triadic

#6399FF #FF6399 #99FF63

tetradic

#6399FF #FF63E7 #FFC963 #63FF7B

square

#6399FF #FF63E7 #FFC963 #63FF7B

split-complementary

#6399FF #FF7B63 #E7FF63

monochromatic

#0050E8 #2671FF #6399FF #A0C1FF #DDE9FF

Accessibility & contrast

On white

2.79

#6399FF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.53

#6399FF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #6399FF

7.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6399FF	#FFFFFF	#000000	##000000
##6399FF	1.00	2.79	7.53	7.53
#FFFFFF	2.79	1.00	21.00	21.00
#000000	7.53	21.00	1.00	1.00
##000000	7.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6CA3FF

Deuteranopia (green-blind)

#5694FD

Tritanopia (blue-blind)

#00B0C0

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #6399ff;
/* rgb */ color: rgb(99, 153, 255);
/* oklch */ color: oklch(69.3% 0.161 262.0);

Tailwind

colors: {
  custom: {
    50: '#9cb6ff',
    500: '#6399ff',
    950: '#000000',
  },
}

SCSS

$custom: #6399ff;
$custom-light: #9cb6ff;
$custom-dark: #000000;

JSON

{
  "hex": "#6399ff",
  "rgb": {
    "r": 99,
    "g": 153,
    "b": 255
  },
  "hsl": {
    "h": 219.231,
    "s": 100,
    "l": 69.412
  },
  "oklch": {
    "l": 0.69262,
    "c": 0.16114,
    "h": 262
  },
  "luminance": 0.32655
}

Semantic roles & 50–950 ramp

primary

#6399FF

secondary

#F5E6C8

accent

#9600E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1118

muted

#7F8086

Preview Lab

Preview with #6399FF

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

Preview Lab → · Contrast checker → · Palette generator →