#3F4CAB#3F4CAB

#3F4CAB is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.1% C 0.151 H 273.1°. Best body text is #FFFFFF at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#3F4CAB
RGB	rgb(63, 76, 171)
HSL	hsl(233, 46%, 46%)
HSV	hsv(233, 63%, 67%)
CMYK	cmyk(63.2%, 55.6%, 0%, 32.9%)
CIE-LAB	lab(36.30, 25.28, -52.66)
CIE-LCH	lch(36.30, 58.41, 295.65°)
OKLab	oklab(46.07% 0.0081 -0.1512)
OKLCH	oklch(46.07% 0.151 273.1)
XYZ	xyz(11.9826, 9.1649, 39.6577)
Luminance	0.0917 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4CAB #AB9E3F

analogous

#3F82AB #3F4CAB #683FAB

triadic

#3F4CAB #AB3F4C #4CAB3F

tetradic

#3F4CAB #AB3F82 #AB9E3F #3FAB68

square

#3F4CAB #AB3F82 #AB9E3F #3FAB68

split-complementary

#3F4CAB #AB683F #82AB3F

monochromatic

#1E2452 #2F387E #3F4CAB #626EC5 #8F97D6

Accessibility & contrast

On white

7.41

#3F4CAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#3F4CAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4CAB

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4CAB	#FFFFFF	#000000	##FFFFFF
##3F4CAB	1.00	7.41	2.83	7.41
#FFFFFF	7.41	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#015AAE

Deuteranopia (green-blind)

#0051A9

Tritanopia (blue-blind)

#006374

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3f4cab;
/* rgb */ color: rgb(63, 76, 171);
/* oklch */ color: oklch(46.1% 0.151 273.1);

Tailwind

colors: {
  custom: {
    50: '#7f7dc5',
    500: '#3f4cab',
    950: '#000000',
  },
}

SCSS

$custom: #3f4cab;
$custom-light: #7f7dc5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4cab",
  "rgb": {
    "r": 63,
    "g": 76,
    "b": 171
  },
  "hsl": {
    "h": 232.778,
    "s": 46.154,
    "l": 45.882
  },
  "oklch": {
    "l": 0.46066,
    "c": 0.15144,
    "h": 273.1
  },
  "luminance": 0.09166
}

Semantic roles & 50–950 ramp

primary

#3F4CAB

secondary

#C1B985

accent

#C652D6

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3F4CAB

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

Preview Lab → · Contrast checker → · Palette generator →