#6399F7#6399F7

#6399F7 is a light, vivid blue. Relative luminance 0.322; OKLCH L 68.8% C 0.151 H 260.8°. Best body text is #000000 at 7.43:1 contrast (WCAG AA passes).

Color values

HEX#6399F7
RGBrgb(99, 153, 247)
HSLhsl(218, 90%, 68%)
HSVhsv(218, 60%, 97%)
CMYKcmyk(59.9%, 38.1%, 0%, 3.1%)
CIE-LABlab(63.46, 10.03, -52.36)
CIE-LCHlch(63.46, 53.31, 280.85°)
OKLaboklab(68.81% -0.0241 -0.1487)
OKLCHoklch(68.81% 0.151 260.8)
XYZxyz(33.3195, 32.1476, 92.4269)
Luminance0.3215 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#6399F7 #F7C163
analogous
#63E3F7 #6399F7 #7763F7
triadic
#6399F7 #F76399 #99F763
tetradic
#6399F7 #F763E3 #F7C163 #63F777
square
#6399F7 #F763E3 #F7C163 #63F777
split-complementary
#6399F7 #F77763 #E3F763
monochromatic
#0B55D5 #2973F4 #6399F7 #9DBFFA #D7E5FD

Accessibility & contrast

On white

2.83
#6399F7 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.43
#6399F7 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #6399F7
7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##6399F7#FFFFFF#000000##000000
##6399F71.002.837.437.43
#FFFFFF2.831.0021.0021.00
#0000007.4321.001.001.00
##0000007.4321.001.001.00

Color blindness preview

Protanopia (red-blind)
#71A1FB
Deuteranopia (green-blind)
#5C93F5
Tritanopia (blue-blind)
#00AEBC
Achromatopsia (no color)
#9A9A9A

Design tokens & code

CSS
--color: #6399f7;
/* rgb */ color: rgb(99, 153, 247);
/* oklch */ color: oklch(68.8% 0.151 260.8);
Tailwind
colors: {
  custom: {
    50: '#9bb6fa',
    500: '#6399f7',
    950: '#000000',
  },
}
SCSS
$custom: #6399f7;
$custom-light: #9bb6fa;
$custom-dark: #000000;
JSON
{
  "hex": "#6399f7",
  "rgb": {
    "r": 99,
    "g": 153,
    "b": 247
  },
  "hsl": {
    "h": 218.108,
    "s": 90.244,
    "l": 67.843
  },
  "oklch": {
    "l": 0.68807,
    "c": 0.15062,
    "h": 260.8
  },
  "luminance": 0.32151
}

Semantic roles & 50–950 ramp

primary
#6399F7
secondary
#F2E1C4
accent
#9200E6
background
#FAFBFF
surface
#F4F6FF
border
#CED0D7
text
#0F1117
muted
#7F8085

Preview Lab

Preview with #6399F7

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

Preview Lab → · Contrast checker → · Palette generator →

#6399F7 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva