#3B42DD#3B42DD

#3B42DD is a mid, highly saturated blue. Relative luminance 0.100; OKLCH L 48.5% C 0.229 H 272.1°. Best body text is #FFFFFF at 6.98:1 contrast (WCAG AA passes).

Color values

HEX	#3B42DD
RGB	rgb(59, 66, 221)
HSL	hsl(237, 70%, 55%)
HSV	hsv(237, 73%, 87%)
CMYK	cmyk(73.3%, 70.1%, 0%, 13.3%)
CIE-LAB	lab(37.92, 48.17, -79.19)
CIE-LCH	lch(37.92, 92.69, 301.31°)
OKLab	oklab(48.49% 0.0082 -0.2291)
OKLCH	oklch(48.49% 0.229 272.1)
XYZ	xyz(16.7986, 10.0449, 69.4461)
Luminance	0.1005 (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

#3B42DD #DDD63B

analogous

#3B93DD #3B42DD #853BDD

triadic

#3B42DD #DD3B42 #42DD3B

tetradic

#3B42DD #DD3B93 #DDD63B #3BDD85

square

#3B42DD #DD3B93 #DDD63B #3BDD85

split-complementary

#3B42DD #DD853B #93DD3B

monochromatic

#171C86 #2027BA #3B42DD #6F74E6 #A3A7EF

Accessibility & contrast

On white

6.98

#3B42DD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#3B42DD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B42DD

6.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B42DD	#FFFFFF	#000000	##FFFFFF
##3B42DD	1.00	6.98	3.01	6.98
#FFFFFF	6.98	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061E2

Deuteranopia (green-blind)

#0051DA

Tritanopia (blue-blind)

#006D8B

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3b42dd;
/* rgb */ color: rgb(59, 66, 221);
/* oklch */ color: oklch(48.5% 0.229 272.1);

Tailwind

colors: {
  custom: {
    50: '#8977e9',
    500: '#3b42dd',
    950: '#000000',
  },
}

SCSS

$custom: #3b42dd;
$custom-light: #8977e9;
$custom-dark: #000000;

JSON

{
  "hex": "#3b42dd",
  "rgb": {
    "r": 59,
    "g": 66,
    "b": 221
  },
  "hsl": {
    "h": 237.407,
    "s": 70.435,
    "l": 54.902
  },
  "oklch": {
    "l": 0.48491,
    "c": 0.22928,
    "h": 272.1
  },
  "luminance": 0.10047
}

Semantic roles & 50–950 ramp

primary

#3B42DD

secondary

#DCD998

accent

#E53BED

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #3B42DD

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

Preview Lab → · Contrast checker → · Palette generator →