#3F50AE#3F50AE

#3F50AE is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.1% C 0.150 H 271.7°. Best body text is #FFFFFF at 7.07:1 contrast (WCAG AA passes).

Color values

HEX	#3F50AE
RGB	rgb(63, 80, 174)
HSL	hsl(231, 47%, 46%)
HSV	hsv(231, 64%, 68%)
CMYK	cmyk(63.8%, 54%, 0%, 31.8%)
CIE-LAB	lab(37.57, 23.74, -52.38)
CIE-LCH	lch(37.57, 57.51, 294.38°)
OKLab	oklab(47.09% 0.0044 -0.1504)
OKLCH	oklch(47.09% 0.15 271.7)
XYZ	xyz(12.5560, 9.8490, 41.2756)
Luminance	0.0985 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F50AE #AE9D3F

analogous

#3F88AE #3F50AE #663FAE

triadic

#3F50AE #AE3F50 #50AE3F

tetradic

#3F50AE #AE3F88 #AE9D3F #3FAE66

square

#3F50AE #AE3F88 #AE9D3F #3FAE66

split-complementary

#3F50AE #AE663F #88AE3F

monochromatic

#1E2754 #2F3B81 #3F50AE #6473C7 #909BD7

Accessibility & contrast

On white

7.07

#3F50AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#3F50AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F50AE

7.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F50AE	#FFFFFF	#000000	##FFFFFF
##3F50AE	1.00	7.07	2.97	7.07
#FFFFFF	7.07	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#105EB1

Deuteranopia (green-blind)

#0054AC

Tritanopia (blue-blind)

#006677

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f50ae;
/* rgb */ color: rgb(63, 80, 174);
/* oklch */ color: oklch(47.1% 0.150 271.7);

Tailwind

colors: {
  custom: {
    50: '#8080c7',
    500: '#3f50ae',
    950: '#000000',
  },
}

SCSS

$custom: #3f50ae;
$custom-light: #8080c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f50ae",
  "rgb": {
    "r": 63,
    "g": 80,
    "b": 174
  },
  "hsl": {
    "h": 230.811,
    "s": 46.835,
    "l": 46.471
  },
  "oklch": {
    "l": 0.47087,
    "c": 0.15043,
    "h": 271.7
  },
  "luminance": 0.0985
}

Semantic roles & 50–950 ramp

primary

#3F50AE

secondary

#C2B987

accent

#C251D6

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3F50AE

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

Preview Lab → · Contrast checker → · Palette generator →