#3933B8#3933B8

#3933B8 is a dark, highly saturated blue. Relative luminance 0.067; OKLCH L 42.5% C 0.200 H 275.7°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#3933B8
RGB	rgb(57, 51, 184)
HSL	hsl(243, 57%, 46%)
HSV	hsv(243, 72%, 72%)
CMYK	cmyk(69%, 72.3%, 0%, 27.8%)
CIE-LAB	lab(31.11, 44.40, -68.88)
CIE-LCH	lch(31.11, 81.95, 302.80°)
OKLab	oklab(42.5% 0.0198 -0.1991)
OKLCH	oklch(42.5% 0.2 275.7)
XYZ	xyz(11.5201, 6.6971, 46.0237)
Luminance	0.0670 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 3.84

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3933B8 #B2B833

analogous

#336FB8 #3933B8 #7B33B8

triadic

#3933B8 #B83933 #33B839

tetradic

#3933B8 #B8336F #B2B833 #33B87B

square

#3933B8 #B8336F #B2B833 #33B87B

split-complementary

#3933B8 #B87B33 #6FB833

monochromatic

#1B1858 #2A2688 #3933B8 #5D58D1 #8B88DE

Accessibility & contrast

On white

8.98

#3933B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#3933B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3933B8

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3933B8	#FFFFFF	#000000	##FFFFFF
##3933B8	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FBC

Deuteranopia (green-blind)

#0043B6

Tritanopia (blue-blind)

#005872

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3933b8;
/* rgb */ color: rgb(57, 51, 184);
/* oklch */ color: oklch(42.5% 0.200 275.7);

Tailwind

colors: {
  custom: {
    50: '#816ccf',
    500: '#3933b8',
    950: '#000000',
  },
}

SCSS

$custom: #3933b8;
$custom-light: #816ccf;
$custom-dark: #000000;

JSON

{
  "hex": "#3933b8",
  "rgb": {
    "r": 57,
    "g": 51,
    "b": 184
  },
  "hsl": {
    "h": 242.707,
    "s": 56.596,
    "l": 46.078
  },
  "oklch": {
    "l": 0.42503,
    "c": 0.20004,
    "h": 275.7
  },
  "luminance": 0.06698
}

Semantic roles & 50–950 ramp

primary

#3933B8

secondary

#C4C87F

accent

#E048D9

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3933B8

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

Preview Lab → · Contrast checker → · Palette generator →