#6491EB#6491EB

#6491EB is a light, vivid blue. Relative luminance 0.290; OKLCH L 66.5% C 0.143 H 263.0°. Best body text is #000000 at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#6491EB
RGB	rgb(100, 145, 235)
HSL	hsl(220, 77%, 66%)
HSV	hsv(220, 57%, 92%)
CMYK	cmyk(57.4%, 38.3%, 0%, 7.8%)
CIE-LAB	lab(60.74, 11.04, -50.07)
CIE-LCH	lch(60.74, 51.27, 282.44°)
OKLab	oklab(66.51% -0.0175 -0.142)
OKLCH	oklch(66.51% 0.143 263)
XYZ	xyz(30.3712, 28.9558, 82.5697)
Luminance	0.2896 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6491EB #EBBE64

analogous

#64D4EB #6491EB #7A64EB

triadic

#6491EB #EB6491 #91EB64

tetradic

#6491EB #EB64D4 #EBBE64 #64EB7A

square

#6491EB #EB64D4 #EBBE64 #64EB7A

split-complementary

#6491EB #EB7A64 #D4EB64

monochromatic

#184FBC #2E6BE4 #6491EB #9AB7F2 #D0DEF9

Accessibility & contrast

On white

3.09

#6491EB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.79

#6491EB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6491EB

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6491EB	#FFFFFF	#000000	##000000
##6491EB	1.00	3.09	6.79	6.79
#FFFFFF	3.09	1.00	21.00	21.00
#000000	6.79	21.00	1.00	1.00
##000000	6.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B99EF

Deuteranopia (green-blind)

#5A8DE9

Tritanopia (blue-blind)

#00A5B3

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #6491eb;
/* rgb */ color: rgb(100, 145, 235);
/* oklch */ color: oklch(66.5% 0.143 263.0);

Tailwind

colors: {
  custom: {
    50: '#9ab0f2',
    500: '#6491eb',
    950: '#000000',
  },
}

SCSS

$custom: #6491eb;
$custom-light: #9ab0f2;
$custom-dark: #000000;

JSON

{
  "hex": "#6491eb",
  "rgb": {
    "r": 100,
    "g": 145,
    "b": 235
  },
  "hsl": {
    "h": 220,
    "s": 77.143,
    "l": 65.686
  },
  "oklch": {
    "l": 0.66512,
    "c": 0.1431,
    "h": 263
  },
  "luminance": 0.28958
}

Semantic roles & 50–950 ramp

primary

#6491EB

secondary

#ECDDBF

accent

#950CD9

background

#FAFAFE

surface

#F3F4FD

border

#CDCED5

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #6491EB

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

Preview Lab → · Contrast checker → · Palette generator →