#6366EE#6366EE

#6366EE is a mid, highly saturated blue. Relative luminance 0.183; OKLCH L 58.3% C 0.200 H 277.3°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#6366EE
RGB	rgb(99, 102, 238)
HSL	hsl(239, 80%, 66%)
HSV	hsv(239, 58%, 93%)
CMYK	cmyk(58.4%, 57.1%, 0%, 6.7%)
CIE-LAB	lab(49.89, 37.73, -69.15)
CIE-LCH	lch(49.89, 78.78, 298.62°)
OKLab	oklab(58.32% 0.0253 -0.1986)
OKLCH	oklch(58.32% 0.2 277.3)
XYZ	xyz(25.3246, 18.3266, 83.0752)
Luminance	0.1833 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6366EE #EEEB63

analogous

#63ABEE #6366EE #A563EE

triadic

#6366EE #EE6366 #66EE63

tetradic

#6366EE #EE63AB #EEEB63 #63EEA5

square

#6366EE #EE63AB #EEEB63 #63EEA5

split-complementary

#6366EE #EEA563 #ABEE63

monochromatic

#1519C2 #2C30E8 #6366EE #9A9CF4 #D1D2FA

Accessibility & contrast

On white

4.50

#6366EE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#6366EE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6366EE

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6366EE	#FFFFFF	#000000	##000000
##6366EE	1.00	4.50	4.67	4.67
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#007DF3

Deuteranopia (green-blind)

#0071EB

Tritanopia (blue-blind)

#0086A0

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #6366ee;
/* rgb */ color: rgb(99, 102, 238);
/* oklch */ color: oklch(58.3% 0.200 277.3);

Tailwind

colors: {
  custom: {
    50: '#9b91f4',
    500: '#6366ee',
    950: '#000000',
  },
}

SCSS

$custom: #6366ee;
$custom-light: #9b91f4;
$custom-dark: #000000;

JSON

{
  "hex": "#6366ee",
  "rgb": {
    "r": 99,
    "g": 102,
    "b": 238
  },
  "hsl": {
    "h": 238.705,
    "s": 80.347,
    "l": 66.078
  },
  "oklch": {
    "l": 0.58316,
    "c": 0.20017,
    "h": 277.3
  },
  "luminance": 0.18328
}

Semantic roles & 50–950 ramp

primary

#6366EE

secondary

#EDECC0

accent

#D809DD

background

#FAF8FF

surface

#F4F0FE

border

#CECBD6

text

#0F0D17

muted

#7F7D85

Preview Lab

Preview with #6366EE

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

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