#3F47AA#3F47AA

#3F47AA is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.0% C 0.157 H 274.7°. Best body text is #FFFFFF at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#3F47AA
RGB	rgb(63, 71, 170)
HSL	hsl(236, 46%, 46%)
HSV	hsv(236, 63%, 67%)
CMYK	cmyk(62.9%, 58.2%, 0%, 33.3%)
CIE-LAB	lab(34.93, 28.17, -54.28)
CIE-LCH	lch(34.93, 61.15, 297.43°)
OKLab	oklab(45.02% 0.0129 -0.156)
OKLCH	oklch(45.02% 0.157 274.7)
XYZ	xyz(11.5565, 8.4646, 39.0472)
Luminance	0.0847 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F47AA #AAA23F

analogous

#3F7CAA #3F47AA #6C3FAA

triadic

#3F47AA #AA3F47 #47AA3F

tetradic

#3F47AA #AA3F7C #AAA23F #3FAA6C

square

#3F47AA #AA3F7C #AAA23F #3FAA6C

split-complementary

#3F47AA #AA6C3F #7CAA3F

monochromatic

#1E2251 #2E347D #3F47AA #6269C5 #8E94D5

Accessibility & contrast

On white

7.80

#3F47AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#3F47AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F47AA

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F47AA	#FFFFFF	#000000	##FFFFFF
##3F47AA	1.00	7.80	2.69	7.80
#FFFFFF	7.80	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057AD

Deuteranopia (green-blind)

#004EA8

Tritanopia (blue-blind)

#005F71

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3f47aa;
/* rgb */ color: rgb(63, 71, 170);
/* oklch */ color: oklch(45.0% 0.157 274.7);

Tailwind

colors: {
  custom: {
    50: '#7f7ac4',
    500: '#3f47aa',
    950: '#000000',
  },
}

SCSS

$custom: #3f47aa;
$custom-light: #7f7ac4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f47aa",
  "rgb": {
    "r": 63,
    "g": 71,
    "b": 170
  },
  "hsl": {
    "h": 235.514,
    "s": 45.923,
    "l": 45.686
  },
  "oklch": {
    "l": 0.45022,
    "c": 0.15657,
    "h": 274.7
  },
  "luminance": 0.08466
}

Semantic roles & 50–950 ramp

primary

#3F47AA

secondary

#C0BC85

accent

#CC52D6

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3F47AA

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

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