#6399F5#6399F5

#6399F5 is a light, vivid blue. Relative luminance 0.320; OKLCH L 68.7% C 0.148 H 260.5°. Best body text is #000000 at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#6399F5
RGB	rgb(99, 153, 245)
HSL	hsl(218, 88%, 67%)
HSV	hsv(218, 60%, 96%)
CMYK	cmyk(59.6%, 37.6%, 0%, 3.9%)
CIE-LAB	lab(63.36, 9.38, -51.43)
CIE-LCH	lch(63.36, 52.27, 280.34°)
OKLab	oklab(68.7% -0.0245 -0.1459)
OKLCH	oklch(68.7% 0.148 260.5)
XYZ	xyz(33.0125, 32.0248, 90.8102)
Luminance	0.3203 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6399F5 #F5BF63

analogous

#63E2F5 #6399F5 #7663F5

triadic

#6399F5 #F56399 #99F563

tetradic

#6399F5 #F563E2 #F5BF63 #63F576

square

#6399F5 #F563E2 #F5BF63 #63F576

split-complementary

#6399F5 #F57663 #E2F563

monochromatic

#0D55D0 #2973F1 #6399F5 #9DBFF9 #D6E4FC

Accessibility & contrast

On white

2.84

#6399F5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.41

#6399F5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #6399F5

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6399F5	#FFFFFF	#000000	##000000
##6399F5	1.00	2.84	7.41	7.41
#FFFFFF	2.84	1.00	21.00	21.00
#000000	7.41	21.00	1.00	1.00
##000000	7.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#72A1F9

Deuteranopia (green-blind)

#5E93F3

Tritanopia (blue-blind)

#00AEBB

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #6399f5;
/* rgb */ color: rgb(99, 153, 245);
/* oklch */ color: oklch(68.7% 0.148 260.5);

Tailwind

colors: {
  custom: {
    50: '#9ab6f9',
    500: '#6399f5',
    950: '#000000',
  },
}

SCSS

$custom: #6399f5;
$custom-light: #9ab6f9;
$custom-dark: #000000;

JSON

{
  "hex": "#6399f5",
  "rgb": {
    "r": 99,
    "g": 153,
    "b": 245
  },
  "hsl": {
    "h": 217.808,
    "s": 87.952,
    "l": 67.451
  },
  "oklch": {
    "l": 0.68696,
    "c": 0.14799,
    "h": 260.5
  },
  "luminance": 0.32028
}

Semantic roles & 50–950 ramp

primary

#6399F5

secondary

#F1E0C3

accent

#9001E5

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1117

muted

#7F8085

Preview Lab

Preview with #6399F5

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

Preview Lab → · Contrast checker → · Palette generator →