#6599EE#6599EE

#6599EE is a light, vivid blue. Relative luminance 0.317; OKLCH L 68.4% C 0.138 H 259.8°. Best body text is #000000 at 7.34:1 contrast (WCAG AA passes).

Color values

HEX	#6599EE
RGB	rgb(101, 153, 238)
HSL	hsl(217, 80%, 66%)
HSV	hsv(217, 58%, 93%)
CMYK	cmyk(57.6%, 35.7%, 0%, 6.7%)
CIE-LAB	lab(63.11, 7.51, -47.97)
CIE-LCH	lch(63.11, 48.56, 278.90°)
OKLab	oklab(68.41% -0.0244 -0.1358)
OKLCH	oklch(68.41% 0.138 259.8)
XYZ	xyz(32.1853, 31.7195, 85.2987)
Luminance	0.3172 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6599EE #EEBA65

analogous

#65DEEE #6599EE #7665EE

triadic

#6599EE #EE6599 #99EE65

tetradic

#6599EE #EE65DE #EEBA65 #65EE76

square

#6599EE #EE65DE #EEBA65 #65EE76

split-complementary

#6599EE #EE7665 #DEEE65

monochromatic

#1657C3 #2E74E8 #6599EE #9CBEF4 #D3E2FA

Accessibility & contrast

On white

2.86

#6599EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.34

#6599EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #6599EE

7.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6599EE	#FFFFFF	#000000	##000000
##6599EE	1.00	2.86	7.34	7.34
#FFFFFF	2.86	1.00	21.00	21.00
#000000	7.34	21.00	1.00	1.00
##000000	7.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#76A0F1

Deuteranopia (green-blind)

#6493EC

Tritanopia (blue-blind)

#00ACB8

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #6599ee;
/* rgb */ color: rgb(101, 153, 238);
/* oklch */ color: oklch(68.4% 0.138 259.8);

Tailwind

colors: {
  custom: {
    50: '#9bb6f4',
    500: '#6599ee',
    950: '#000000',
  },
}

SCSS

$custom: #6599ee;
$custom-light: #9bb6f4;
$custom-dark: #000000;

JSON

{
  "hex": "#6599ee",
  "rgb": {
    "r": 101,
    "g": 153,
    "b": 238
  },
  "hsl": {
    "h": 217.226,
    "s": 80.117,
    "l": 66.471
  },
  "oklch": {
    "l": 0.68411,
    "c": 0.138,
    "h": 259.8
  },
  "luminance": 0.31722
}

Semantic roles & 50–950 ramp

primary

#6599EE

secondary

#EEDDC1

accent

#8C09DC

background

#FAFBFE

surface

#F3F6FD

border

#CDD0D5

text

#0F1117

muted

#7F8085

Preview Lab

Preview with #6599EE

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

Preview Lab → · Contrast checker → · Palette generator →