#6599E9#6599E9

#6599E9 is a light, vivid blue. Relative luminance 0.314; OKLCH L 68.1% C 0.131 H 258.7°. Best body text is #000000 at 7.29:1 contrast (WCAG AA passes).

Color values

HEX	#6599E9
RGB	rgb(101, 153, 233)
HSL	hsl(216, 75%, 65%)
HSV	hsv(216, 57%, 91%)
CMYK	cmyk(56.7%, 34.3%, 0%, 8.6%)
CIE-LAB	lab(62.87, 5.92, -45.60)
CIE-LCH	lch(62.87, 45.98, 277.40°)
OKLab	oklab(68.14% -0.0257 -0.1289)
OKLCH	oklch(68.14% 0.131 258.7)
XYZ	xyz(31.4609, 31.4297, 81.4836)
Luminance	0.3143 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6599E9 #E9B565

analogous

#65DBE9 #6599E9 #7365E9

triadic

#6599E9 #E96599 #99E965

tetradic

#6599E9 #E965DB #E9B565 #65E973

square

#6599E9 #E965DB #E9B565 #65E973

split-complementary

#6599E9 #E97365 #DBE965

monochromatic

#1A59B9 #2F76E1 #6599E9 #9BBCF1 #D0E0F8

Accessibility & contrast

On white

2.88

#6599E9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.29

#6599E9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #6599E9

7.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6599E9	#FFFFFF	#000000	##000000
##6599E9	1.00	2.88	7.29	7.29
#FFFFFF	2.88	1.00	21.00	21.00
#000000	7.29	21.00	1.00	1.00
##000000	7.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#789FEC

Deuteranopia (green-blind)

#6792E7

Tritanopia (blue-blind)

#00ABB6

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #6599e9;
/* rgb */ color: rgb(101, 153, 233);
/* oklch */ color: oklch(68.1% 0.131 258.7);

Tailwind

colors: {
  custom: {
    50: '#9ab6f0',
    500: '#6599e9',
    950: '#000000',
  },
}

SCSS

$custom: #6599e9;
$custom-light: #9ab6f0;
$custom-dark: #000000;

JSON

{
  "hex": "#6599e9",
  "rgb": {
    "r": 101,
    "g": 153,
    "b": 233
  },
  "hsl": {
    "h": 216.364,
    "s": 75,
    "l": 65.49
  },
  "oklch": {
    "l": 0.68144,
    "c": 0.13142,
    "h": 258.7
  },
  "luminance": 0.31432
}

Semantic roles & 50–950 ramp

primary

#6599E9

secondary

#EBDABF

accent

#880ED7

background

#FAFBFE

surface

#F3F6FD

border

#CDD0D5

text

#0F1116

muted

#7F8084

Preview Lab

Preview with #6599E9

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

Preview Lab → · Contrast checker → · Palette generator →