#3F34B4#3F34B4

#3F34B4 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.7% C 0.193 H 278.2°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#3F34B4
RGB	rgb(63, 52, 180)
HSL	hsl(245, 55%, 45%)
HSV	hsv(245, 71%, 71%)
CMYK	cmyk(65%, 71.1%, 0%, 29.4%)
CIE-LAB	lab(31.36, 43.24, -66.07)
CIE-LCH	lch(31.36, 78.96, 303.21°)
OKLab	oklab(42.68% 0.0276 -0.1907)
OKLCH	oklch(42.68% 0.193 278.2)
XYZ	xyz(11.5135, 6.8071, 43.8783)
Luminance	0.0681 (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

#3F34B4 #A9B434

analogous

#3469B4 #3F34B4 #7F34B4

triadic

#3F34B4 #B43F34 #34B43F

tetradic

#3F34B4 #B43469 #A9B434 #34B47F

square

#3F34B4 #B43469 #A9B434 #34B47F

split-complementary

#3F34B4 #B47F34 #69B434

monochromatic

#1E1955 #2E2685 #3F34B4 #6157CE #8E86DC

Accessibility & contrast

On white

8.89

#3F34B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#3F34B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F34B4

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F34B4	#FFFFFF	#000000	##FFFFFF
##3F34B4	1.00	8.89	2.36	8.89
#FFFFFF	8.89	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB8

Deuteranopia (green-blind)

#0045B2

Tritanopia (blue-blind)

#005770

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3f34b4;
/* rgb */ color: rgb(63, 52, 180);
/* oklch */ color: oklch(42.7% 0.193 278.2);

Tailwind

colors: {
  custom: {
    50: '#836dcc',
    500: '#3f34b4',
    950: '#000000',
  },
}

SCSS

$custom: #3f34b4;
$custom-light: #836dcc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f34b4",
  "rgb": {
    "r": 63,
    "g": 52,
    "b": 180
  },
  "hsl": {
    "h": 245.156,
    "s": 55.172,
    "l": 45.49
  },
  "oklch": {
    "l": 0.42682,
    "c": 0.19268,
    "h": 278.2
  },
  "luminance": 0.06808
}

Semantic roles & 50–950 ramp

primary

#3F34B4

secondary

#C0C67E

accent

#DF49D2

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3F34B4

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

Preview Lab → · Contrast checker → · Palette generator →