#6699F3#6699F3

#6699F3 is a light, vivid blue. Relative luminance 0.321; OKLCH L 68.7% C 0.144 H 261.1°. Best body text is #000000 at 7.42:1 contrast (WCAG AA passes).

Color values

HEX	#6699F3
RGB	rgb(102, 153, 243)
HSL	hsl(218, 85%, 68%)
HSV	hsv(218, 58%, 95%)
CMYK	cmyk(58%, 37%, 0%, 4.7%)
CIE-LAB	lab(63.41, 9.31, -50.25)
CIE-LCH	lch(63.41, 51.11, 280.50°)
OKLab	oklab(68.73% -0.0224 -0.1425)
OKLCH	oklch(68.73% 0.144 261.1)
XYZ	xyz(33.0428, 32.0755, 89.2266)
Luminance	0.3208 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6699F3 #F3C066

analogous

#66DFF3 #6699F3 #7966F3

triadic

#6699F3 #F36699 #99F366

tetradic

#6699F3 #F366DF #F3C066 #66F379

square

#6699F3 #F366DF #F3C066 #66F379

split-complementary

#6699F3 #F37966 #DFF366

monochromatic

#1055CE #2D73EF #6699F3 #9FBFF7 #D7E5FC

Accessibility & contrast

On white

2.83

#6699F3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.42

#6699F3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #6699F3

7.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6699F3	#FFFFFF	#000000	##000000
##6699F3	1.00	2.83	7.42	7.42
#FFFFFF	2.83	1.00	21.00	21.00
#000000	7.42	21.00	1.00	1.00
##000000	7.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#73A1F7

Deuteranopia (green-blind)

#6193F1

Tritanopia (blue-blind)

#00ADBA

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #6699f3;
/* rgb */ color: rgb(102, 153, 243);
/* oklch */ color: oklch(68.7% 0.144 261.1);

Tailwind

colors: {
  custom: {
    50: '#9cb6f7',
    500: '#6699f3',
    950: '#000000',
  },
}

SCSS

$custom: #6699f3;
$custom-light: #9cb6f7;
$custom-dark: #000000;

JSON

{
  "hex": "#6699f3",
  "rgb": {
    "r": 102,
    "g": 153,
    "b": 243
  },
  "hsl": {
    "h": 218.298,
    "s": 85.455,
    "l": 67.647
  },
  "oklch": {
    "l": 0.68734,
    "c": 0.14421,
    "h": 261.1
  },
  "luminance": 0.32078
}

Semantic roles & 50–950 ramp

primary

#6699F3

secondary

#F0E0C5

accent

#9204E2

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1117

muted

#7F8085

Preview Lab

Preview with #6699F3

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

Preview Lab → · Contrast checker → · Palette generator →