#6599E4#6599E4

#6599E4 is a light, vivid blue. Relative luminance 0.312; OKLCH L 67.9% C 0.125 H 257.5°. Best body text is #000000 at 7.23:1 contrast (WCAG AA passes).

Color values

HEX	#6599E4
RGB	rgb(101, 153, 228)
HSL	hsl(215, 70%, 65%)
HSV	hsv(215, 56%, 89%)
CMYK	cmyk(55.7%, 32.9%, 0%, 10.6%)
CIE-LAB	lab(62.63, 4.34, -43.21)
CIE-LCH	lch(62.63, 43.43, 275.73°)
OKLab	oklab(67.88% -0.0269 -0.1219)
OKLCH	oklch(67.88% 0.125 257.5)
XYZ	xyz(30.7568, 31.1481, 77.7751)
Luminance	0.3115 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6599E4 #E4B065

analogous

#65D9E4 #6599E4 #7165E4

triadic

#6599E4 #E46599 #99E465

tetradic

#6599E4 #E465D9 #E4B065 #65E471

square

#6599E4 #E465D9 #E4B065 #65E471

split-complementary

#6599E4 #E47165 #D9E465

monochromatic

#1F5AB0 #3177DB #6599E4 #99BBED #CDDEF6

Accessibility & contrast

On white

2.90

#6599E4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.23

#6599E4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #6599E4

7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6599E4	#FFFFFF	#000000	##000000
##6599E4	1.00	2.90	7.23	7.23
#FFFFFF	2.90	1.00	21.00	21.00
#000000	7.23	21.00	1.00	1.00
##000000	7.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A9EE7

Deuteranopia (green-blind)

#6A92E2

Tritanopia (blue-blind)

#01AAB4

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #6599e4;
/* rgb */ color: rgb(101, 153, 228);
/* oklch */ color: oklch(67.9% 0.125 257.5);

Tailwind

colors: {
  custom: {
    50: '#99b6ed',
    500: '#6599e4',
    950: '#000000',
  },
}

SCSS

$custom: #6599e4;
$custom-light: #99b6ed;
$custom-dark: #000000;

JSON

{
  "hex": "#6599e4",
  "rgb": {
    "r": 101,
    "g": 153,
    "b": 228
  },
  "hsl": {
    "h": 215.433,
    "s": 70.166,
    "l": 64.51
  },
  "oklch": {
    "l": 0.67883,
    "c": 0.12487,
    "h": 257.5
  },
  "luminance": 0.31151
}

Semantic roles & 50–950 ramp

primary

#6599E4

secondary

#E8D6BC

accent

#8413D2

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0F1116

muted

#7E8084

Preview Lab

Preview with #6599E4

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

Preview Lab → · Contrast checker → · Palette generator →