#6591EC#6591EC

#6591EC is a light, vivid blue. Relative luminance 0.291; OKLCH L 66.6% C 0.144 H 263.5°. Best body text is #000000 at 6.81:1 contrast (WCAG AA passes).

Color values

HEX	#6591EC
RGB	rgb(101, 145, 236)
HSL	hsl(220, 78%, 66%)
HSV	hsv(220, 57%, 93%)
CMYK	cmyk(57.2%, 38.6%, 0%, 7.5%)
CIE-LAB	lab(60.84, 11.56, -50.46)
CIE-LCH	lch(60.84, 51.76, 282.91°)
OKLab	oklab(66.62% -0.0164 -0.1431)
OKLCH	oklch(66.62% 0.144 263.5)
XYZ	xyz(30.6274, 29.0711, 83.3379)
Luminance	0.2907 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6591EC #ECC065

analogous

#65D5EC #6591EC #7C65EC

triadic

#6591EC #EC6591 #91EC65

tetradic

#6591EC #EC65D5 #ECC065 #65EC7C

square

#6591EC #EC65D5 #ECC065 #65EC7C

split-complementary

#6591EC #EC7C65 #D5EC65

monochromatic

#184EBF #2F6AE5 #6591EC #9BB8F3 #D2DFF9

Accessibility & contrast

On white

3.08

#6591EC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.81

#6591EC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6591EC

6.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6591EC	#FFFFFF	#000000	##000000
##6591EC	1.00	3.08	6.81	6.81
#FFFFFF	3.08	1.00	21.00	21.00
#000000	6.81	21.00	1.00	1.00
##000000	6.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B99F0

Deuteranopia (green-blind)

#598DEA

Tritanopia (blue-blind)

#00A5B3

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #6591ec;
/* rgb */ color: rgb(101, 145, 236);
/* oklch */ color: oklch(66.6% 0.144 263.5);

Tailwind

colors: {
  custom: {
    50: '#9ab0f2',
    500: '#6591ec',
    950: '#000000',
  },
}

SCSS

$custom: #6591ec;
$custom-light: #9ab0f2;
$custom-dark: #000000;

JSON

{
  "hex": "#6591ec",
  "rgb": {
    "r": 101,
    "g": 145,
    "b": 236
  },
  "hsl": {
    "h": 220.444,
    "s": 78.035,
    "l": 66.078
  },
  "oklch": {
    "l": 0.66621,
    "c": 0.14408,
    "h": 263.5
  },
  "luminance": 0.29074
}

Semantic roles & 50–950 ramp

primary

#6591EC

secondary

#EDDEC0

accent

#970BDA

background

#FAFAFE

surface

#F3F4FD

border

#CDCED5

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #6591EC

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

Preview Lab → · Contrast checker → · Palette generator →