#3331B3#3331B3

#3331B3 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 41.3% C 0.197 H 274.2°. Best body text is #FFFFFF at 9.41:1 contrast (WCAG AA passes).

Color values

HEX	#3331B3
RGB	rgb(51, 49, 179)
HSL	hsl(241, 57%, 45%)
HSV	hsv(241, 73%, 70%)
CMYK	cmyk(71.5%, 72.6%, 0%, 29.8%)
CIE-LAB	lab(29.80, 43.25, -68.08)
CIE-LCH	lch(29.80, 80.65, 302.43°)
OKLab	oklab(41.32% 0.0144 -0.1969)
OKLCH	oklch(41.32% 0.197 274.2)
XYZ	xyz(10.5975, 6.1541, 43.2684)
Luminance	0.0616 (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

#3331B3 #B1B331

analogous

#3170B3 #3331B3 #7431B3

triadic

#3331B3 #B33331 #31B333

tetradic

#3331B3 #B33170 #B1B331 #31B374

square

#3331B3 #B33170 #B1B331 #31B374

split-complementary

#3331B3 #B37431 #70B331

monochromatic

#181753 #252483 #3331B3 #5452D0 #8382DD

Accessibility & contrast

On white

9.41

#3331B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#3331B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3331B3

9.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3331B3	#FFFFFF	#000000	##FFFFFF
##3331B3	1.00	9.41	2.23	9.41
#FFFFFF	9.41	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB7

Deuteranopia (green-blind)

#0040B1

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3331b3;
/* rgb */ color: rgb(51, 49, 179);
/* oklch */ color: oklch(41.3% 0.197 274.2);

Tailwind

colors: {
  custom: {
    50: '#7e6bcb',
    500: '#3331b3',
    950: '#000000',
  },
}

SCSS

$custom: #3331b3;
$custom-light: #7e6bcb;
$custom-dark: #000000;

JSON

{
  "hex": "#3331b3",
  "rgb": {
    "r": 51,
    "g": 49,
    "b": 179
  },
  "hsl": {
    "h": 240.923,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.41315,
    "c": 0.19739,
    "h": 274.2
  },
  "luminance": 0.06155
}

Semantic roles & 50–950 ramp

primary

#3331B3

secondary

#C5C67A

accent

#E048DE

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3331B3

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

Preview Lab → · Contrast checker → · Palette generator →