#6591DD#6591DD

#6591DD is a light, vivid blue. Relative luminance 0.282; OKLCH L 65.8% C 0.124 H 260.8°. Best body text is #000000 at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#6591DD
RGB	rgb(101, 145, 221)
HSL	hsl(218, 64%, 63%)
HSV	hsv(218, 54%, 87%)
CMYK	cmyk(54.3%, 34.4%, 0%, 13.3%)
CIE-LAB	lab(60.10, 6.79, -43.31)
CIE-LCH	lch(60.10, 43.84, 278.91°)
OKLab	oklab(65.8% -0.0198 -0.1223)
OKLCH	oklch(65.8% 0.124 260.8)
XYZ	xyz(28.5389, 28.2357, 72.3387)
Luminance	0.2824 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6591DD #DDB165

analogous

#65CDDD #6591DD #7565DD

triadic

#6591DD #DD6591 #91DD65

tetradic

#6591DD #DD65CD #DDB165 #65DD75

square

#6591DD #DD65CD #DDB165 #65DD75

split-complementary

#6591DD #DD7565 #CDDD65

monochromatic

#2453A4 #336DD2 #6591DD #97B5E8 #C9D9F3

Accessibility & contrast

On white

3.16

#6591DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.65

#6591DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6591DD

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6591DD	#FFFFFF	#000000	##000000
##6591DD	1.00	3.16	6.65	6.65
#FFFFFF	3.16	1.00	21.00	21.00
#000000	6.65	21.00	1.00	1.00
##000000	6.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7297E0

Deuteranopia (green-blind)

#648CDB

Tritanopia (blue-blind)

#1DA2AD

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #6591dd;
/* rgb */ color: rgb(101, 145, 221);
/* oklch */ color: oklch(65.8% 0.124 260.8);

Tailwind

colors: {
  custom: {
    50: '#99b0e8',
    500: '#6591dd',
    950: '#000000',
  },
}

SCSS

$custom: #6591dd;
$custom-light: #99b0e8;
$custom-dark: #000000;

JSON

{
  "hex": "#6591dd",
  "rgb": {
    "r": 101,
    "g": 145,
    "b": 221
  },
  "hsl": {
    "h": 218,
    "s": 63.83,
    "l": 63.137
  },
  "oklch": {
    "l": 0.65802,
    "c": 0.12388,
    "h": 260.8
  },
  "luminance": 0.28238
}

Semantic roles & 50–950 ramp

primary

#6591DD

secondary

#E4D5B9

accent

#8A1ACC

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0E1016

muted

#7E7F84

Preview Lab

Preview with #6591DD

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

Preview Lab → · Contrast checker → · Palette generator →