#6599EF#6599EF

#6599EF is a light, vivid blue. Relative luminance 0.318; OKLCH L 68.5% C 0.139 H 260.0°. Best body text is #000000 at 7.36:1 contrast (WCAG AA passes).

Color values

HEX	#6599EF
RGB	rgb(101, 153, 239)
HSL	hsl(217, 81%, 67%)
HSV	hsv(217, 58%, 94%)
CMYK	cmyk(57.7%, 36%, 0%, 6.3%)
CIE-LAB	lab(63.16, 7.83, -48.45)
CIE-LCH	lch(63.16, 49.08, 279.18°)
OKLab	oklab(68.47% -0.0242 -0.1372)
OKLCH	oklch(68.47% 0.139 260)
XYZ	xyz(32.3326, 31.7784, 86.0746)
Luminance	0.3178 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6599EF #EFBB65

analogous

#65DEEF #6599EF #7665EF

triadic

#6599EF #EF6599 #99EF65

tetradic

#6599EF #EF65DE #EFBB65 #65EF76

square

#6599EF #EF65DE #EFBB65 #65EF76

split-complementary

#6599EF #EF7665 #DEEF65

monochromatic

#1457C5 #2E74E9 #6599EF #9CBEF5 #D4E2FB

Accessibility & contrast

On white

2.85

#6599EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.36

#6599EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #6599EF

7.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6599EF	#FFFFFF	#000000	##000000
##6599EF	1.00	2.85	7.36	7.36
#FFFFFF	2.85	1.00	21.00	21.00
#000000	7.36	21.00	1.00	1.00
##000000	7.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#75A0F3

Deuteranopia (green-blind)

#6393ED

Tritanopia (blue-blind)

#00ACB9

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #6599ef;
/* rgb */ color: rgb(101, 153, 239);
/* oklch */ color: oklch(68.5% 0.139 260.0);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#6599ef",
  "rgb": {
    "r": 101,
    "g": 153,
    "b": 239
  },
  "hsl": {
    "h": 217.391,
    "s": 81.176,
    "l": 66.667
  },
  "oklch": {
    "l": 0.68465,
    "c": 0.13932,
    "h": 260
  },
  "luminance": 0.31781
}

Semantic roles & 50–950 ramp

primary

#6599EF

secondary

#EEDDC2

accent

#8D08DE

background

#FAFBFE

surface

#F3F6FD

border

#CDD0D5

text

#0F1117

muted

#7F8085

Preview Lab

Preview with #6599EF

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

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