#3F50EE#3F50EE

#3F50EE is a mid, highly saturated blue. Relative luminance 0.130; OKLCH L 52.5% C 0.234 H 270.8°. Best body text is #FFFFFF at 5.84:1 contrast (WCAG AA passes).

Color values

HEX	#3F50EE
RGB	rgb(63, 80, 238)
HSL	hsl(234, 84%, 59%)
HSV	hsv(234, 74%, 93%)
CMYK	cmyk(73.5%, 66.4%, 0%, 6.7%)
CIE-LAB	lab(42.71, 46.04, -80.96)
CIE-LCH	lch(42.71, 93.13, 299.62°)
OKLab	oklab(52.48% 0.0031 -0.2342)
OKLCH	oklch(52.48% 0.234 270.8)
XYZ	xyz(20.3459, 12.9650, 82.3026)
Luminance	0.1297 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F50EE #EEDD3F

analogous

#3FA8EE #3F50EE #853FEE

triadic

#3F50EE #EE3F50 #50EE3F

tetradic

#3F50EE #EE3FA8 #EEDD3F #3FEE85

square

#3F50EE #EE3FA8 #EEDD3F #3FEE85

split-complementary

#3F50EE #EE853F #A8EE3F

monochromatic

#0F1DA4 #1427DC #3F50EE #7783F3 #AFB6F8

Accessibility & contrast

On white

5.84

#3F50EE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#3F50EE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F50EE

5.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F50EE	#FFFFFF	#000000	##FFFFFF
##3F50EE	1.00	5.84	3.59	5.84
#FFFFFF	5.84	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DF3

Deuteranopia (green-blind)

#005DEB

Tritanopia (blue-blind)

#007B98

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3f50ee;
/* rgb */ color: rgb(63, 80, 238);
/* oklch */ color: oklch(52.5% 0.234 270.8);

Tailwind

colors: {
  custom: {
    50: '#8d81f5',
    500: '#3f50ee',
    950: '#000000',
  },
}

SCSS

$custom: #3f50ee;
$custom-light: #8d81f5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f50ee",
  "rgb": {
    "r": 63,
    "g": 80,
    "b": 238
  },
  "hsl": {
    "h": 234.171,
    "s": 83.732,
    "l": 59.02
  },
  "oklch": {
    "l": 0.5248,
    "c": 0.23423,
    "h": 270.8
  },
  "luminance": 0.12967
}

Semantic roles & 50–950 ramp

primary

#3F50EE

secondary

#E7E0A2

accent

#E62EFA

background

#F9F7FF

surface

#F2EEFF

border

#CCC9D7

text

#0E0A17

muted

#7E7C85

Preview Lab

Preview with #3F50EE

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

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