#3921BD#3921BD

#3921BD is a dark, highly saturated blue. Relative luminance 0.056; OKLCH L 40.8% C 0.222 H 277.1°. Best body text is #FFFFFF at 9.88:1 contrast (WCAG AA passes).

Color values

HEX	#3921BD
RGB	rgb(57, 33, 189)
HSL	hsl(249, 70%, 44%)
HSV	hsv(249, 83%, 74%)
CMYK	cmyk(69.8%, 82.5%, 0%, 25.9%)
CIE-LAB	lab(28.46, 55.04, -76.21)
CIE-LCH	lch(28.46, 94.01, 305.84°)
OKLab	oklab(40.8% 0.0273 -0.2202)
OKLCH	oklch(40.8% 0.222 277.1)
XYZ	xyz(11.4135, 5.6306, 48.6196)
Luminance	0.0563 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3921BD #A5BD21

analogous

#2157BD #3921BD #8721BD

triadic

#3921BD #BD3921 #21BD39

tetradic

#3921BD #BD2157 #A5BD21 #21BD87

square

#3921BD #BD2157 #A5BD21 #21BD87

split-complementary

#3921BD #BD8721 #57BD21

monochromatic

#1A0F55 #291889 #3921BD #563EDD #8472E6

Accessibility & contrast

On white

9.88

#3921BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#3921BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3921BD

9.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3921BD	#FFFFFF	#000000	##FFFFFF
##3921BD	1.00	9.88	2.13	9.88
#FFFFFF	9.88	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049C1

Deuteranopia (green-blind)

#003CBA

Tritanopia (blue-blind)

#005371

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #3921bd;
/* rgb */ color: rgb(57, 33, 189);
/* oklch */ color: oklch(40.8% 0.222 277.1);

Tailwind

colors: {
  custom: {
    50: '#8462d2',
    500: '#3921bd',
    950: '#000000',
  },
}

SCSS

$custom: #3921bd;
$custom-light: #8462d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3921bd",
  "rgb": {
    "r": 57,
    "g": 33,
    "b": 189
  },
  "hsl": {
    "h": 249.231,
    "s": 70.27,
    "l": 43.529
  },
  "oklch": {
    "l": 0.40804,
    "c": 0.22188,
    "h": 277.1
  },
  "luminance": 0.05632
}

Semantic roles & 50–950 ramp

primary

#3921BD

secondary

#BECD6D

accent

#ED3BD2

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0D0514

muted

#7D7A83

Preview Lab

Preview with #3921BD

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

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