#3F30B7#3F30B7

#3F30B7 is a dark, highly saturated blue. Relative luminance 0.066; OKLCH L 42.4% C 0.201 H 278.5°. Best body text is #FFFFFF at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#3F30B7
RGB	rgb(63, 48, 183)
HSL	hsl(247, 58%, 45%)
HSV	hsv(247, 74%, 72%)
CMYK	cmyk(65.6%, 73.8%, 0%, 28.2%)
CIE-LAB	lab(30.85, 46.43, -68.69)
CIE-LCH	lch(30.85, 82.91, 304.06°)
OKLab	oklab(42.41% 0.0297 -0.1983)
OKLCH	oklch(42.41% 0.201 278.5)
XYZ	xyz(11.6513, 6.5886, 45.4483)
Luminance	0.0659 (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

#3F30B7 #A8B730

analogous

#3064B7 #3F30B7 #8330B7

triadic

#3F30B7 #B73F30 #30B73F

tetradic

#3F30B7 #B73064 #A8B730 #30B783

square

#3F30B7 #B73064 #A8B730 #30B783

split-complementary

#3F30B7 #B78330 #64B730

monochromatic

#1E1756 #2E2387 #3F30B7 #6152D2 #8D83DE

Accessibility & contrast

On white

9.06

#3F30B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#3F30B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F30B7

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F30B7	#FFFFFF	#000000	##FFFFFF
##3F30B7	1.00	9.06	2.32	9.06
#FFFFFF	9.06	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EBB

Deuteranopia (green-blind)

#0043B5

Tritanopia (blue-blind)

#005671

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3f30b7;
/* rgb */ color: rgb(63, 48, 183);
/* oklch */ color: oklch(42.4% 0.201 278.5);

Tailwind

colors: {
  custom: {
    50: '#846bce',
    500: '#3f30b7',
    950: '#000000',
  },
}

SCSS

$custom: #3f30b7;
$custom-light: #846bce;
$custom-dark: #000000;

JSON

{
  "hex": "#3f30b7",
  "rgb": {
    "r": 63,
    "g": 48,
    "b": 183
  },
  "hsl": {
    "h": 246.667,
    "s": 58.442,
    "l": 45.294
  },
  "oklch": {
    "l": 0.42405,
    "c": 0.20055,
    "h": 278.5
  },
  "luminance": 0.0659
}

Semantic roles & 50–950 ramp

primary

#3F30B7

secondary

#BFC87B

accent

#E246D0

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3F30B7

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

Preview Lab → · Contrast checker → · Palette generator →