#6591DF#6591DF

#6591DF is a light, vivid blue. Relative luminance 0.283; OKLCH L 65.9% C 0.127 H 261.2°. Best body text is #000000 at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#6591DF
RGB	rgb(101, 145, 223)
HSL	hsl(218, 66%, 64%)
HSV	hsv(218, 55%, 87%)
CMYK	cmyk(54.7%, 35%, 0%, 12.5%)
CIE-LAB	lab(60.20, 7.42, -44.27)
CIE-LCH	lch(60.20, 44.89, 279.52°)
OKLab	oklab(65.91% -0.0193 -0.1251)
OKLCH	oklch(65.91% 0.127 261.2)
XYZ	xyz(28.8070, 28.3430, 73.7504)
Luminance	0.2834 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6591DF #DFB365

analogous

#65CEDF #6591DF #7665DF

triadic

#6591DF #DF6591 #91DF65

tetradic

#6591DF #DF65CE #DFB365 #65DF76

square

#6591DF #DF65CE #DFB365 #65DF76

split-complementary

#6591DF #DF7665 #CEDF65

monochromatic

#2352A7 #326DD4 #6591DF #98B5EA #CAD9F4

Accessibility & contrast

On white

3.15

#6591DF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.67

#6591DF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6591DF

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6591DF	#FFFFFF	#000000	##000000
##6591DF	1.00	3.15	6.67	6.67
#FFFFFF	3.15	1.00	21.00	21.00
#000000	6.67	21.00	1.00	1.00
##000000	6.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7197E2

Deuteranopia (green-blind)

#628CDD

Tritanopia (blue-blind)

#19A2AE

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #6591df;
/* rgb */ color: rgb(101, 145, 223);
/* oklch */ color: oklch(65.9% 0.127 261.2);

Tailwind

colors: {
  custom: {
    50: '#99b0e9',
    500: '#6591df',
    950: '#000000',
  },
}

SCSS

$custom: #6591df;
$custom-light: #99b0e9;
$custom-dark: #000000;

JSON

{
  "hex": "#6591df",
  "rgb": {
    "r": 101,
    "g": 145,
    "b": 223
  },
  "hsl": {
    "h": 218.361,
    "s": 65.591,
    "l": 63.529
  },
  "oklch": {
    "l": 0.65908,
    "c": 0.12656,
    "h": 261.2
  },
  "luminance": 0.28345
}

Semantic roles & 50–950 ramp

primary

#6591DF

secondary

#E6D6BA

accent

#8C18CD

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E1016

muted

#7E7F84

Preview Lab

Preview with #6591DF

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

Preview Lab → · Contrast checker → · Palette generator →