#3F4ECA#3F4ECA

#3F4ECA is a mid, vivid blue. Relative luminance 0.108; OKLCH L 49.0% C 0.191 H 272.0°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#3F4ECA
RGB	rgb(63, 78, 202)
HSL	hsl(234, 57%, 52%)
HSV	hsv(234, 69%, 79%)
CMYK	cmyk(68.8%, 61.4%, 0%, 20.8%)
CIE-LAB	lab(39.19, 34.89, -66.16)
CIE-LCH	lch(39.19, 74.80, 297.81°)
OKLab	oklab(48.96% 0.0066 -0.1909)
OKLCH	oklch(48.96% 0.191 272)
XYZ	xyz(15.4314, 10.7683, 57.1309)
Luminance	0.1077 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4ECA #CABB3F

analogous

#3F94CA #3F4ECA #763FCA

triadic

#3F4ECA #CA3F4E #4ECA3F

tetradic

#3F4ECA #CA3F94 #CABB3F #3FCA76

square

#3F4ECA #CA3F94 #CABB3F #3FCA76

split-complementary

#3F4ECA #CA763F #94CA3F

monochromatic

#1F2870 #2C39A0 #3F4ECA #6F7AD7 #9FA6E4

Accessibility & contrast

On white

6.66

#3F4ECA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#3F4ECA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F4ECA

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4ECA	#FFFFFF	#000000	##FFFFFF
##3F4ECA	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063CE

Deuteranopia (green-blind)

#0056C8

Tritanopia (blue-blind)

#006D84

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f4eca;
/* rgb */ color: rgb(63, 78, 202);
/* oklch */ color: oklch(49.0% 0.191 272.0);

Tailwind

colors: {
  custom: {
    50: '#857fdb',
    500: '#3f4eca',
    950: '#000000',
  },
}

SCSS

$custom: #3f4eca;
$custom-light: #857fdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4eca",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 202
  },
  "hsl": {
    "h": 233.525,
    "s": 56.735,
    "l": 51.961
  },
  "oklch": {
    "l": 0.4896,
    "c": 0.19099,
    "h": 272
  },
  "luminance": 0.1077
}

Semantic roles & 50–950 ramp

primary

#3F4ECA

secondary

#D1CA94

accent

#D048E0

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0A15

muted

#7D7C83

Preview Lab

Preview with #3F4ECA

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

Preview Lab → · Contrast checker → · Palette generator →