#6599F3#6599F3

#6599F3 is a light, vivid blue. Relative luminance 0.320; OKLCH L 68.7% C 0.145 H 260.7°. Best body text is #000000 at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#6599F3
RGB	rgb(101, 153, 243)
HSL	hsl(218, 86%, 67%)
HSV	hsv(218, 58%, 95%)
CMYK	cmyk(58.4%, 37%, 0%, 4.7%)
CIE-LAB	lab(63.36, 9.12, -50.33)
CIE-LCH	lch(63.36, 51.15, 280.27°)
OKLab	oklab(68.68% -0.0233 -0.1427)
OKLCH	oklch(68.68% 0.145 260.7)
XYZ	xyz(32.9301, 32.0174, 89.2213)
Luminance	0.3202 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6599F3 #F3BF65

analogous

#65E0F3 #6599F3 #7865F3

triadic

#6599F3 #F36599 #99F365

tetradic

#6599F3 #F365E0 #F3BF65 #65F378

square

#6599F3 #F365E0 #F3BF65 #65F378

split-complementary

#6599F3 #F37865 #E0F365

monochromatic

#1055CE #2C73EF #6599F3 #9EBFF7 #D7E4FC

Accessibility & contrast

On white

2.84

#6599F3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.40

#6599F3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #6599F3

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6599F3	#FFFFFF	#000000	##000000
##6599F3	1.00	2.84	7.40	7.40
#FFFFFF	2.84	1.00	21.00	21.00
#000000	7.40	21.00	1.00	1.00
##000000	7.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#73A1F7

Deuteranopia (green-blind)

#6093F1

Tritanopia (blue-blind)

#00ADBA

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #6599f3;
/* rgb */ color: rgb(101, 153, 243);
/* oklch */ color: oklch(68.7% 0.145 260.7);

Tailwind

colors: {
  custom: {
    50: '#9bb6f7',
    500: '#6599f3',
    950: '#000000',
  },
}

SCSS

$custom: #6599f3;
$custom-light: #9bb6f7;
$custom-dark: #000000;

JSON

{
  "hex": "#6599f3",
  "rgb": {
    "r": 101,
    "g": 153,
    "b": 243
  },
  "hsl": {
    "h": 218.028,
    "s": 85.542,
    "l": 67.451
  },
  "oklch": {
    "l": 0.68684,
    "c": 0.1446,
    "h": 260.7
  },
  "luminance": 0.3202
}

Semantic roles & 50–950 ramp

primary

#6599F3

secondary

#F0E0C4

accent

#9103E2

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1117

muted

#7F8085

Preview Lab

Preview with #6599F3

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

Preview Lab → · Contrast checker → · Palette generator →