#666EFE#666EFE

#666EFE is a mid, highly saturated blue. Relative luminance 0.211; OKLCH L 61.1% C 0.210 H 275.8°. Best body text is #000000 at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#666EFE
RGB	rgb(102, 110, 254)
HSL	hsl(237, 99%, 70%)
HSV	hsv(237, 60%, 100%)
CMYK	cmyk(59.8%, 56.7%, 0%, 0.4%)
CIE-LAB	lab(53.09, 38.56, -72.86)
CIE-LCH	lch(53.09, 82.43, 297.89°)
OKLab	oklab(61.1% 0.0214 -0.2093)
OKLCH	oklch(61.1% 0.21 275.8)
XYZ	xyz(28.9390, 21.1301, 96.3002)
Luminance	0.2113 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666EFE #FEF666

analogous

#66BAFE #666EFE #AA66FE

triadic

#666EFE #FE666E #6EFE66

tetradic

#666EFE #FE66BA #FEF666 #66FEAA

square

#666EFE #FE66BA #FEF666 #66FEAA

split-complementary

#666EFE #FEAA66 #BAFE66

monochromatic

#020EE8 #2934FE #666EFE #A3A8FE #E0E1FF

Accessibility & contrast

On white

4.02

#666EFE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.23

#666EFE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666EFE

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666EFE	#FFFFFF	#000000	##000000
##666EFE	1.00	4.02	5.23	5.23
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.23	21.00	1.00	1.00
##000000	5.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0085FF

Deuteranopia (green-blind)

#0078FB

Tritanopia (blue-blind)

#0090AB

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #666efe;
/* rgb */ color: rgb(102, 110, 254);
/* oklch */ color: oklch(61.1% 0.210 275.8);

Tailwind

colors: {
  custom: {
    50: '#9f97ff',
    500: '#666efe',
    950: '#000000',
  },
}

SCSS

$custom: #666efe;
$custom-light: #9f97ff;
$custom-dark: #000000;

JSON

{
  "hex": "#666efe",
  "rgb": {
    "r": 102,
    "g": 110,
    "b": 254
  },
  "hsl": {
    "h": 236.842,
    "s": 98.701,
    "l": 69.804
  },
  "oklch": {
    "l": 0.61097,
    "c": 0.2104,
    "h": 275.8
  },
  "luminance": 0.21132
}

Semantic roles & 50–950 ramp

primary

#666EFE

secondary

#F5F3CA

accent

#D900E6

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#100D18

muted

#7F7E86

Preview Lab

Preview with #666EFE

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

Preview Lab → · Contrast checker → · Palette generator →