#3F46CC#3F46CC

#3F46CC is a mid, highly saturated blue. Relative luminance 0.098; OKLCH L 47.8% C 0.203 H 273.4°. Best body text is #FFFFFF at 7.10:1 contrast (WCAG AA passes).

Color values

HEX	#3F46CC
RGB	rgb(63, 70, 204)
HSL	hsl(237, 58%, 52%)
HSV	hsv(237, 69%, 80%)
CMYK	cmyk(69.1%, 65.7%, 0%, 20%)
CIE-LAB	lab(37.47, 40.53, -70.13)
CIE-LCH	lch(37.47, 80.99, 300.02°)
OKLab	oklab(47.76% 0.0122 -0.2026)
OKLCH	oklch(47.76% 0.203 273.4)
XYZ	xyz(15.1355, 9.7953, 58.2081)
Luminance	0.0980 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F46CC #CCC53F

analogous

#3F8DCC #3F46CC #7E3FCC

triadic

#3F46CC #CC3F46 #46CC3F

tetradic

#3F46CC #CC3F8D #CCC53F #3FCC7E

square

#3F46CC #CC3F8D #CCC53F #3FCC7E

split-complementary

#3F46CC #CC7E3F #8DCC3F

monochromatic

#1E2372 #2B31A3 #3F46CC #6F75D9 #A0A3E6

Accessibility & contrast

On white

7.10

#3F46CC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#3F46CC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F46CC

7.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F46CC	#FFFFFF	#000000	##FFFFFF
##3F46CC	1.00	7.10	2.96	7.10
#FFFFFF	7.10	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FD0

Deuteranopia (green-blind)

#0052C9

Tritanopia (blue-blind)

#006983

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f46cc;
/* rgb */ color: rgb(63, 70, 204);
/* oklch */ color: oklch(47.8% 0.203 273.4);

Tailwind

colors: {
  custom: {
    50: '#867add',
    500: '#3f46cc',
    950: '#000000',
  },
}

SCSS

$custom: #3f46cc;
$custom-light: #867add;
$custom-dark: #000000;

JSON

{
  "hex": "#3f46cc",
  "rgb": {
    "r": 63,
    "g": 70,
    "b": 204
  },
  "hsl": {
    "h": 237.021,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.47755,
    "c": 0.20292,
    "h": 273.4
  },
  "luminance": 0.09797
}

Semantic roles & 50–950 ramp

primary

#3F46CC

secondary

#D2CF95

accent

#DA47E1

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #3F46CC

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

Preview Lab → · Contrast checker → · Palette generator →