#6599EB#6599EB

#6599EB is a light, vivid blue. Relative luminance 0.315; OKLCH L 68.3% C 0.134 H 259.2°. Best body text is #000000 at 7.31:1 contrast (WCAG AA passes).

Color values

HEX	#6599EB
RGB	rgb(101, 153, 235)
HSL	hsl(217, 77%, 66%)
HSV	hsv(217, 57%, 92%)
CMYK	cmyk(57%, 34.9%, 0%, 7.8%)
CIE-LAB	lab(62.96, 6.56, -46.55)
CIE-LCH	lch(62.96, 47.01, 278.02°)
OKLab	oklab(68.25% -0.0252 -0.1317)
OKLCH	oklch(68.25% 0.134 259.2)
XYZ	xyz(31.7482, 31.5447, 82.9968)
Luminance	0.3155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6599EB #EBB765

analogous

#65DCEB #6599EB #7465EB

triadic

#6599EB #EB6599 #99EB65

tetradic

#6599EB #EB65DC #EBB765 #65EB74

square

#6599EB #EB65DC #EBB765 #65EB74

split-complementary

#6599EB #EB7465 #DCEB65

monochromatic

#1958BD #2F75E4 #6599EB #9BBDF2 #D1E1F9

Accessibility & contrast

On white

2.87

#6599EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.31

#6599EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #6599EB

7.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6599EB	#FFFFFF	#000000	##000000
##6599EB	1.00	2.87	7.31	7.31
#FFFFFF	2.87	1.00	21.00	21.00
#000000	7.31	21.00	1.00	1.00
##000000	7.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#779FEE

Deuteranopia (green-blind)

#6693E9

Tritanopia (blue-blind)

#00ABB7

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #6599eb;
/* rgb */ color: rgb(101, 153, 235);
/* oklch */ color: oklch(68.3% 0.134 259.2);

Tailwind

colors: {
  custom: {
    50: '#9ab6f2',
    500: '#6599eb',
    950: '#000000',
  },
}

SCSS

$custom: #6599eb;
$custom-light: #9ab6f2;
$custom-dark: #000000;

JSON

{
  "hex": "#6599eb",
  "rgb": {
    "r": 101,
    "g": 153,
    "b": 235
  },
  "hsl": {
    "h": 216.716,
    "s": 77.011,
    "l": 65.882
  },
  "oklch": {
    "l": 0.6825,
    "c": 0.13405,
    "h": 259.2
  },
  "luminance": 0.31547
}

Semantic roles & 50–950 ramp

primary

#6599EB

secondary

#ECDBC0

accent

#8A0CD9

background

#FAFBFE

surface

#F3F6FD

border

#CDD0D5

text

#0F1117

muted

#7F8085

Preview Lab

Preview with #6599EB

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

Preview Lab → · Contrast checker → · Palette generator →