#3F34B3#3F34B3

#3F34B3 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.6% C 0.191 H 278.4°. Best body text is #FFFFFF at 8.92:1 contrast (WCAG AA passes).

Color values

HEX	#3F34B3
RGB	rgb(63, 52, 179)
HSL	hsl(245, 55%, 45%)
HSV	hsv(245, 71%, 70%)
CMYK	cmyk(64.8%, 70.9%, 0%, 29.8%)
CIE-LAB	lab(31.27, 42.92, -65.63)
CIE-LCH	lch(31.27, 78.41, 303.19°)
OKLab	oklab(42.59% 0.0278 -0.1894)
OKLCH	oklch(42.59% 0.191 278.4)
XYZ	xyz(11.4120, 6.7665, 43.3438)
Luminance	0.0677 (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

#3F34B3 #A8B334

analogous

#3468B3 #3F34B3 #7E34B3

triadic

#3F34B3 #B33F34 #34B33F

tetradic

#3F34B3 #B33468 #A8B334 #34B37E

square

#3F34B3 #B33468 #A8B334 #34B37E

split-complementary

#3F34B3 #B37E34 #68B334

monochromatic

#1E1854 #2E2684 #3F34B3 #6156CE #8D86DC

Accessibility & contrast

On white

8.92

#3F34B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#3F34B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F34B3

8.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F34B3	#FFFFFF	#000000	##FFFFFF
##3F34B3	1.00	8.92	2.35	8.92
#FFFFFF	8.92	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB7

Deuteranopia (green-blind)

#0044B1

Tritanopia (blue-blind)

#005770

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3f34b3;
/* rgb */ color: rgb(63, 52, 179);
/* oklch */ color: oklch(42.6% 0.191 278.4);

Tailwind

colors: {
  custom: {
    50: '#836dcb',
    500: '#3f34b3',
    950: '#000000',
  },
}

SCSS

$custom: #3f34b3;
$custom-light: #836dcb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f34b3",
  "rgb": {
    "r": 63,
    "g": 52,
    "b": 179
  },
  "hsl": {
    "h": 245.197,
    "s": 54.978,
    "l": 45.294
  },
  "oklch": {
    "l": 0.42585,
    "c": 0.19143,
    "h": 278.4
  },
  "luminance": 0.06767
}

Semantic roles & 50–950 ramp

primary

#3F34B3

secondary

#BFC57D

accent

#DE49D1

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3F34B3

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

Preview Lab → · Contrast checker → · Palette generator →