#666EDA#666EDA

#666EDA is a mid, vivid blue. Relative luminance 0.190; OKLCH L 58.6% C 0.162 H 277.0°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#666EDA
RGB	rgb(102, 110, 218)
HSL	hsl(236, 61%, 63%)
HSV	hsv(236, 53%, 85%)
CMYK	cmyk(53.2%, 49.5%, 0%, 14.5%)
CIE-LAB	lab(50.73, 27.10, -56.52)
CIE-LCH	lch(50.73, 62.68, 295.62°)
OKLab	oklab(58.58% 0.0197 -0.1613)
OKLCH	oklch(58.58% 0.162 277)
XYZ	xyz(23.7063, 19.0371, 68.7414)
Luminance	0.1904 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666EDA #DAD266

analogous

#66A8DA #666EDA #9866DA

triadic

#666EDA #DA666E #6EDA66

tetradic

#666EDA #DA66A8 #DAD266 #66DA98

square

#666EDA #DA66A8 #DAD266 #66DA98

split-complementary

#666EDA #DA9866 #A8DA66

monochromatic

#262F9F #353FCE #666EDA #979DE6 #C9CBF2

Accessibility & contrast

On white

4.37

#666EDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#666EDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #666EDA

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666EDA	#FFFFFF	#000000	##000000
##666EDA	1.00	4.37	4.81	4.81
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#397EDE

Deuteranopia (green-blind)

#2A74D8

Tritanopia (blue-blind)

#30869A

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #666eda;
/* rgb */ color: rgb(102, 110, 218);
/* oklch */ color: oklch(58.6% 0.162 277.0);

Tailwind

colors: {
  custom: {
    50: '#9a97e6',
    500: '#666eda',
    950: '#000000',
  },
}

SCSS

$custom: #666eda;
$custom-light: #9a97e6;
$custom-dark: #000000;

JSON

{
  "hex": "#666eda",
  "rgb": {
    "r": 102,
    "g": 110,
    "b": 218
  },
  "hsl": {
    "h": 235.862,
    "s": 61.053,
    "l": 62.745
  },
  "oklch": {
    "l": 0.58578,
    "c": 0.16245,
    "h": 277
  },
  "luminance": 0.19039
}

Semantic roles & 50–950 ramp

primary

#666EDA

secondary

#E3E0B9

accent

#BD1DC9

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #666EDA

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

Preview Lab → · Contrast checker → · Palette generator →