#3F51EE#3F51EE

#3F51EE is a mid, highly saturated blue. Relative luminance 0.131; OKLCH L 52.6% C 0.233 H 270.6°. Best body text is #FFFFFF at 5.80:1 contrast (WCAG AA passes).

Color values

HEX	#3F51EE
RGB	rgb(63, 81, 238)
HSL	hsl(234, 84%, 59%)
HSV	hsv(234, 74%, 93%)
CMYK	cmyk(73.5%, 66%, 0%, 6.7%)
CIE-LAB	lab(42.93, 45.44, -80.60)
CIE-LCH	lch(42.93, 92.52, 299.42°)
OKLab	oklab(52.64% 0.0026 -0.2331)
OKLCH	oklch(52.64% 0.233 270.6)
XYZ	xyz(20.4197, 13.1125, 82.3271)
Luminance	0.1311 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F51EE #EEDC3F

analogous

#3FA8EE #3F51EE #853FEE

triadic

#3F51EE #EE3F51 #51EE3F

tetradic

#3F51EE #EE3FA8 #EEDC3F #3FEE85

square

#3F51EE #EE3FA8 #EEDC3F #3FEE85

split-complementary

#3F51EE #EE853F #A8EE3F

monochromatic

#0F1EA4 #1428DC #3F51EE #7784F3 #AFB7F8

Accessibility & contrast

On white

5.80

#3F51EE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#3F51EE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F51EE

5.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F51EE	#FFFFFF	#000000	##FFFFFF
##3F51EE	1.00	5.80	3.62	5.80
#FFFFFF	5.80	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006EF3

Deuteranopia (green-blind)

#005DEB

Tritanopia (blue-blind)

#007B99

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3f51ee;
/* rgb */ color: rgb(63, 81, 238);
/* oklch */ color: oklch(52.6% 0.233 270.6);

Tailwind

colors: {
  custom: {
    50: '#8d82f5',
    500: '#3f51ee',
    950: '#000000',
  },
}

SCSS

$custom: #3f51ee;
$custom-light: #8d82f5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f51ee",
  "rgb": {
    "r": 63,
    "g": 81,
    "b": 238
  },
  "hsl": {
    "h": 233.829,
    "s": 83.732,
    "l": 59.02
  },
  "oklch": {
    "l": 0.52641,
    "c": 0.23315,
    "h": 270.6
  },
  "luminance": 0.13115
}

Semantic roles & 50–950 ramp

primary

#3F51EE

secondary

#E7E0A2

accent

#E52EFA

background

#F9F8FF

surface

#F2EFFF

border

#CCCAD7

text

#0E0A17

muted

#7E7C85

Preview Lab

Preview with #3F51EE

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

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