#666FEE#666FEE

#666FEE is a mid, vivid blue. Relative luminance 0.204; OKLCH L 60.1% C 0.188 H 276.1°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#666FEE
RGB	rgb(102, 111, 238)
HSL	hsl(236, 80%, 67%)
HSV	hsv(236, 57%, 93%)
CMYK	cmyk(57.1%, 53.4%, 0%, 6.7%)
CIE-LAB	lab(52.25, 32.85, -65.33)
CIE-LCH	lch(52.25, 73.12, 296.70°)
OKLab	oklab(60.12% 0.02 -0.1871)
OKLCH	oklch(60.12% 0.188 276.1)
XYZ	xyz(26.5916, 20.3648, 83.4019)
Luminance	0.2037 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666FEE #EEE566

analogous

#66B3EE #666FEE #A166EE

triadic

#666FEE #EE666F #6FEE66

tetradic

#666FEE #EE66B3 #EEE566 #66EEA1

square

#666FEE #EE66B3 #EEE566 #66EEA1

split-complementary

#666FEE #EEA166 #B3EE66

monochromatic

#1621C4 #2F3BE8 #666FEE #9DA3F4 #D4D7FA

Accessibility & contrast

On white

4.14

#666FEE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.07

#666FEE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666FEE

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666FEE	#FFFFFF	#000000	##000000
##666FEE	1.00	4.14	5.07	5.07
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.07	21.00	1.00	1.00
##000000	5.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D82F2

Deuteranopia (green-blind)

#0077EB

Tritanopia (blue-blind)

#068CA4

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #666fee;
/* rgb */ color: rgb(102, 111, 238);
/* oklch */ color: oklch(60.1% 0.188 276.1);

Tailwind

colors: {
  custom: {
    50: '#9c98f4',
    500: '#666fee',
    950: '#000000',
  },
}

SCSS

$custom: #666fee;
$custom-light: #9c98f4;
$custom-dark: #000000;

JSON

{
  "hex": "#666fee",
  "rgb": {
    "r": 102,
    "g": 111,
    "b": 238
  },
  "hsl": {
    "h": 236.029,
    "s": 80,
    "l": 66.667
  },
  "oklch": {
    "l": 0.60124,
    "c": 0.18822,
    "h": 276.1
  },
  "luminance": 0.20367
}

Semantic roles & 50–950 ramp

primary

#666FEE

secondary

#EEEBC2

accent

#CE09DC

background

#FAF9FF

surface

#F4F2FE

border

#CECCD6

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #666FEE

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

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