#6399F4#6399F4

#6399F4 is a light, vivid blue. Relative luminance 0.320; OKLCH L 68.6% C 0.147 H 260.3°. Best body text is #000000 at 7.39:1 contrast (WCAG AA passes).

Color values

HEX#6399F4
RGBrgb(99, 153, 244)
HSLhsl(218, 87%, 67%)
HSVhsv(218, 59%, 96%)
CMYKcmyk(59.4%, 37.3%, 0%, 4.3%)
CIE-LABlab(63.31, 9.06, -50.96)
CIE-LCHlch(63.31, 51.76, 280.08°)
OKLaboklab(68.64% -0.0248 -0.1446)
OKLCHoklch(68.64% 0.147 260.3)
XYZxyz(32.8602, 31.9639, 90.0084)
Luminance0.3197 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#6399F4 #F4BE63
analogous
#63E2F4 #6399F4 #7663F4
triadic
#6399F4 #F46399 #99F463
tetradic
#6399F4 #F463E2 #F4BE63 #63F476
square
#6399F4 #F463E2 #F4BE63 #63F476
split-complementary
#6399F4 #F47663 #E2F463
monochromatic
#0F56CE #2A74F0 #6399F4 #9CBEF8 #D5E4FC

Accessibility & contrast

On white

2.84
#6399F4 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.39
#6399F4 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #6399F4
7.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##6399F4#FFFFFF#000000##000000
##6399F41.002.847.397.39
#FFFFFF2.841.0021.0021.00
#0000007.3921.001.001.00
##0000007.3921.001.001.00

Color blindness preview

Protanopia (red-blind)
#72A1F8
Deuteranopia (green-blind)
#5F93F2
Tritanopia (blue-blind)
#00ADBB
Achromatopsia (no color)
#999999

Design tokens & code

CSS
--color: #6399f4;
/* rgb */ color: rgb(99, 153, 244);
/* oklch */ color: oklch(68.6% 0.147 260.3);
Tailwind
colors: {
  custom: {
    50: '#9ab6f8',
    500: '#6399f4',
    950: '#000000',
  },
}
SCSS
$custom: #6399f4;
$custom-light: #9ab6f8;
$custom-dark: #000000;
JSON
{
  "hex": "#6399f4",
  "rgb": {
    "r": 99,
    "g": 153,
    "b": 244
  },
  "hsl": {
    "h": 217.655,
    "s": 86.826,
    "l": 67.255
  },
  "oklch": {
    "l": 0.6864,
    "c": 0.14668,
    "h": 260.3
  },
  "luminance": 0.31967
}

Semantic roles & 50–950 ramp

primary
#6399F4
secondary
#F0DFC3
accent
#8F02E3
background
#FAFBFF
surface
#F3F6FF
border
#CDD0D7
text
#0F1117
muted
#7F8085

Preview Lab

Preview with #6399F4

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

Preview Lab → · Contrast checker → · Palette generator →

#6399F4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva