#3F4CB9#3F4CB9

#3F4CB9 is a mid, vivid blue. Relative luminance 0.097; OKLCH L 47.2% C 0.171 H 272.8°. Best body text is #FFFFFF at 7.13:1 contrast (WCAG AA passes).

Color values

HEX	#3F4CB9
RGB	rgb(63, 76, 185)
HSL	hsl(234, 49%, 49%)
HSV	hsv(234, 66%, 73%)
CMYK	cmyk(65.9%, 58.9%, 0%, 27.5%)
CIE-LAB	lab(37.35, 30.21, -59.24)
CIE-LCH	lch(37.35, 66.49, 297.02°)
OKLab	oklab(47.18% 0.0084 -0.1706)
OKLCH	oklch(47.18% 0.171 272.8)
XYZ	xyz(13.3884, 9.7272, 47.0615)
Luminance	0.0973 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4CB9 #B9AC3F

analogous

#3F89B9 #3F4CB9 #6F3FB9

triadic

#3F4CB9 #B93F4C #4CB93F

tetradic

#3F4CB9 #B93F89 #B9AC3F #3FB96F

square

#3F4CB9 #B93F89 #B9AC3F #3FB96F

split-complementary

#3F4CB9 #B96F3F #89B93F

monochromatic

#20265E #2F398B #3F4CB9 #6974CC #979EDC

Accessibility & contrast

On white

7.13

#3F4CB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#3F4CB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4CB9

7.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4CB9	#FFFFFF	#000000	##FFFFFF
##3F4CB9	1.00	7.13	2.95	7.13
#FFFFFF	7.13	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DBD

Deuteranopia (green-blind)

#0053B7

Tritanopia (blue-blind)

#00677B

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f4cb9;
/* rgb */ color: rgb(63, 76, 185);
/* oklch */ color: oklch(47.2% 0.171 272.8);

Tailwind

colors: {
  custom: {
    50: '#827ecf',
    500: '#3f4cb9',
    950: '#000000',
  },
}

SCSS

$custom: #3f4cb9;
$custom-light: #827ecf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4cb9",
  "rgb": {
    "r": 63,
    "g": 76,
    "b": 185
  },
  "hsl": {
    "h": 233.607,
    "s": 49.194,
    "l": 48.627
  },
  "oklch": {
    "l": 0.47179,
    "c": 0.17077,
    "h": 272.8
  },
  "luminance": 0.09728
}

Semantic roles & 50–950 ramp

primary

#3F4CB9

secondary

#C7C18D

accent

#CA4FD9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #3F4CB9

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

Preview Lab → · Contrast checker → · Palette generator →