#3F34B8#3F34B8

#3F34B8 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 43.1% C 0.198 H 277.8°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#3F34B8
RGB	rgb(63, 52, 184)
HSL	hsl(245, 56%, 46%)
HSV	hsv(245, 72%, 72%)
CMYK	cmyk(65.8%, 71.7%, 0%, 27.8%)
CIE-LAB	lab(31.74, 44.53, -67.81)
CIE-LCH	lch(31.74, 81.13, 303.29°)
OKLab	oklab(43.07% 0.0269 -0.1958)
OKLCH	oklch(43.07% 0.198 277.8)
XYZ	xyz(11.9268, 6.9724, 46.0554)
Luminance	0.0697 (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

#3F34B8 #ADB834

analogous

#346BB8 #3F34B8 #8134B8

triadic

#3F34B8 #B83F34 #34B83F

tetradic

#3F34B8 #B8346B #ADB834 #34B881

square

#3F34B8 #B8346B #ADB834 #34B881

split-complementary

#3F34B8 #B88134 #6BB834

monochromatic

#1E1959 #2F2788 #3F34B8 #6359D0 #9089DE

Accessibility & contrast

On white

8.77

#3F34B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3F34B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F34B8

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F34B8	#FFFFFF	#000000	##FFFFFF
##3F34B8	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050BC

Deuteranopia (green-blind)

#0045B6

Tritanopia (blue-blind)

#005972

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3f34b8;
/* rgb */ color: rgb(63, 52, 184);
/* oklch */ color: oklch(43.1% 0.198 277.8);

Tailwind

colors: {
  custom: {
    50: '#846dce',
    500: '#3f34b8',
    950: '#000000',
  },
}

SCSS

$custom: #3f34b8;
$custom-light: #846dce;
$custom-dark: #000000;

JSON

{
  "hex": "#3f34b8",
  "rgb": {
    "r": 63,
    "g": 52,
    "b": 184
  },
  "hsl": {
    "h": 245,
    "s": 55.932,
    "l": 46.275
  },
  "oklch": {
    "l": 0.43068,
    "c": 0.19764,
    "h": 277.8
  },
  "luminance": 0.06973
}

Semantic roles & 50–950 ramp

primary

#3F34B8

secondary

#C2C880

accent

#DF49D3

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3F34B8

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

Preview Lab → · Contrast checker → · Palette generator →