#3933B7#3933B7

#3933B7 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.4% C 0.199 H 275.8°. Best body text is #FFFFFF at 9.01:1 contrast (WCAG AA passes).

Color values

HEX	#3933B7
RGB	rgb(57, 51, 183)
HSL	hsl(243, 56%, 46%)
HSV	hsv(243, 72%, 72%)
CMYK	cmyk(68.9%, 72.1%, 0%, 28.2%)
CIE-LAB	lab(31.01, 44.07, -68.45)
CIE-LCH	lch(31.01, 81.40, 302.77°)
OKLab	oklab(42.4% 0.02 -0.1978)
OKLCH	oklch(42.4% 0.199 275.8)
XYZ	xyz(11.4156, 6.6554, 45.4736)
Luminance	0.0666 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 3.76

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3933B7 #B1B733

analogous

#336FB7 #3933B7 #7B33B7

triadic

#3933B7 #B73933 #33B739

tetradic

#3933B7 #B7336F #B1B733 #33B77B

square

#3933B7 #B7336F #B1B733 #33B77B

split-complementary

#3933B7 #B77B33 #6FB733

monochromatic

#1B1857 #2A2687 #3933B7 #5D57D0 #8B87DE

Accessibility & contrast

On white

9.01

#3933B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#3933B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3933B7

9.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3933B7	#FFFFFF	#000000	##FFFFFF
##3933B7	1.00	9.01	2.33	9.01
#FFFFFF	9.01	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FBB

Deuteranopia (green-blind)

#0043B5

Tritanopia (blue-blind)

#005872

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3933b7;
/* rgb */ color: rgb(57, 51, 183);
/* oklch */ color: oklch(42.4% 0.199 275.8);

Tailwind

colors: {
  custom: {
    50: '#816cce',
    500: '#3933b7',
    950: '#000000',
  },
}

SCSS

$custom: #3933b7;
$custom-light: #816cce;
$custom-dark: #000000;

JSON

{
  "hex": "#3933b7",
  "rgb": {
    "r": 57,
    "g": 51,
    "b": 183
  },
  "hsl": {
    "h": 242.727,
    "s": 56.41,
    "l": 45.882
  },
  "oklch": {
    "l": 0.42403,
    "c": 0.19881,
    "h": 275.8
  },
  "luminance": 0.06656
}

Semantic roles & 50–950 ramp

primary

#3933B7

secondary

#C4C77F

accent

#E048D9

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3933B7

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

Preview Lab → · Contrast checker → · Palette generator →