#6599FB#6599FB

#6599FB is a light, vivid blue. Relative luminance 0.325; OKLCH L 69.1% C 0.155 H 262.0°. Best body text is #000000 at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#6599FB
RGB	rgb(101, 153, 251)
HSL	hsl(219, 95%, 69%)
HSV	hsv(219, 60%, 98%)
CMYK	cmyk(59.8%, 39%, 0%, 1.6%)
CIE-LAB	lab(63.76, 11.70, -54.07)
CIE-LCH	lch(63.76, 55.32, 282.21°)
OKLab	oklab(69.13% -0.0216 -0.1536)
OKLCH	oklch(69.13% 0.155 262)
XYZ	xyz(34.1646, 32.5112, 95.7230)
Luminance	0.3251 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6599FB #FBC765

analogous

#65E4FB #6599FB #7C65FB

triadic

#6599FB #FB6599 #99FB65

tetradic

#6599FB #FB65E4 #FBC765 #65FB7C

square

#6599FB #FB65E4 #FBC765 #65FB7C

split-complementary

#6599FB #FB7C65 #E4FB65

monochromatic

#0651E0 #2971F9 #6599FB #A1C1FD #DCE8FE

Accessibility & contrast

On white

2.80

#6599FB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.50

#6599FB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #6599FB

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6599FB	#FFFFFF	#000000	##000000
##6599FB	1.00	2.80	7.50	7.50
#FFFFFF	2.80	1.00	21.00	21.00
#000000	7.50	21.00	1.00	1.00
##000000	7.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6FA2FF

Deuteranopia (green-blind)

#5A94F9

Tritanopia (blue-blind)

#00AFBE

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #6599fb;
/* rgb */ color: rgb(101, 153, 251);
/* oklch */ color: oklch(69.1% 0.155 262.0);

Tailwind

colors: {
  custom: {
    50: '#9cb6fd',
    500: '#6599fb',
    950: '#000000',
  },
}

SCSS

$custom: #6599fb;
$custom-light: #9cb6fd;
$custom-dark: #000000;

JSON

{
  "hex": "#6599fb",
  "rgb": {
    "r": 101,
    "g": 153,
    "b": 251
  },
  "hsl": {
    "h": 219.2,
    "s": 94.937,
    "l": 69.02
  },
  "oklch": {
    "l": 0.69131,
    "c": 0.15516,
    "h": 262
  },
  "luminance": 0.32514
}

Semantic roles & 50–950 ramp

primary

#6599FB

secondary

#F4E5C8

accent

#9600E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1118

muted

#7F8086

Preview Lab

Preview with #6599FB

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

Preview Lab → · Contrast checker → · Palette generator →