#3933B1#3933B1

#3933B1 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.8% C 0.191 H 276.3°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#3933B1
RGB	rgb(57, 51, 177)
HSL	hsl(243, 55%, 45%)
HSV	hsv(243, 71%, 69%)
CMYK	cmyk(67.8%, 71.2%, 0%, 30.6%)
CIE-LAB	lab(30.43, 42.10, -65.84)
CIE-LCH	lch(30.43, 78.14, 302.59°)
OKLab	oklab(41.81% 0.021 -0.1902)
OKLCH	oklch(41.81% 0.191 276.3)
XYZ	xyz(10.8044, 6.4109, 42.2545)
Luminance	0.0641 (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

#3933B1 #ABB133

analogous

#336CB1 #3933B1 #7833B1

triadic

#3933B1 #B13933 #33B139

tetradic

#3933B1 #B1336C #ABB133 #33B178

square

#3933B1 #B1336C #ABB133 #33B178

split-complementary

#3933B1 #B17833 #6CB133

monochromatic

#1A1852 #2A2581 #3933B1 #5954CE #8783DB

Accessibility & contrast

On white

9.20

#3933B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#3933B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3933B1

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3933B1	#FFFFFF	#000000	##FFFFFF
##3933B1	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB5

Deuteranopia (green-blind)

#0042AF

Tritanopia (blue-blind)

#00566E

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3933b1;
/* rgb */ color: rgb(57, 51, 177);
/* oklch */ color: oklch(41.8% 0.191 276.3);

Tailwind

colors: {
  custom: {
    50: '#806cc9',
    500: '#3933b1',
    950: '#000000',
  },
}

SCSS

$custom: #3933b1;
$custom-light: #806cc9;
$custom-dark: #000000;

JSON

{
  "hex": "#3933b1",
  "rgb": {
    "r": 57,
    "g": 51,
    "b": 177
  },
  "hsl": {
    "h": 242.857,
    "s": 55.263,
    "l": 44.706
  },
  "oklch": {
    "l": 0.41811,
    "c": 0.19134,
    "h": 276.3
  },
  "luminance": 0.06412
}

Semantic roles & 50–950 ramp

primary

#3933B1

secondary

#C1C57B

accent

#DF49D7

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3933B1

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

Preview Lab → · Contrast checker → · Palette generator →