#3F33A2#3F33A2

#3F33A2 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.8% C 0.171 H 280.5°. Best body text is #FFFFFF at 9.52:1 contrast (WCAG AA passes).

Color values

HEX	#3F33A2
RGB	rgb(63, 51, 162)
HSL	hsl(246, 52%, 42%)
HSV	hsv(246, 69%, 64%)
CMYK	cmyk(61.1%, 68.5%, 0%, 36.5%)
CIE-LAB	lab(29.49, 37.99, -58.34)
CIE-LCH	lch(29.49, 69.62, 303.07°)
OKLab	oklab(40.83% 0.0313 -0.1681)
OKLCH	oklch(40.83% 0.171 280.5)
XYZ	xyz(9.7533, 6.0324, 34.8258)
Luminance	0.0603 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.18

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F33A2 #96A233

analogous

#335FA2 #3F33A2 #7733A2

triadic

#3F33A2 #A23F33 #33A23F

tetradic

#3F33A2 #A2335F #96A233 #33A277

square

#3F33A2 #A2335F #96A233 #33A277

split-complementary

#3F33A2 #A27733 #5FA233

monochromatic

#1B1645 #2D2473 #3F33A2 #594CC7 #847AD5

Accessibility & contrast

On white

9.52

#3F33A2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#3F33A2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F33A2

9.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F33A2	#FFFFFF	#000000	##FFFFFF
##3F33A2	1.00	9.52	2.21	9.52
#FFFFFF	9.52	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA5

Deuteranopia (green-blind)

#0041A0

Tritanopia (blue-blind)

#005066

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3f33a2;
/* rgb */ color: rgb(63, 51, 162);
/* oklch */ color: oklch(40.8% 0.171 280.5);

Tailwind

colors: {
  custom: {
    50: '#7f6cbf',
    500: '#3f33a2',
    950: '#000000',
  },
}

SCSS

$custom: #3f33a2;
$custom-light: #7f6cbf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f33a2",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 162
  },
  "hsl": {
    "h": 246.486,
    "s": 52.113,
    "l": 41.765
  },
  "oklch": {
    "l": 0.40834,
    "c": 0.17096,
    "h": 280.5
  },
  "luminance": 0.06033
}

Semantic roles & 50–950 ramp

primary

#3F33A2

secondary

#B6BE73

accent

#DC4CCC

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #3F33A2

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

Preview Lab → · Contrast checker → · Palette generator →