#3B40DD#3B40DD

#3B40DD is a mid, highly saturated blue. Relative luminance 0.098; OKLCH L 48.2% C 0.231 H 272.3°. Best body text is #FFFFFF at 7.09:1 contrast (WCAG AA passes).

Color values

HEX	#3B40DD
RGB	rgb(59, 64, 221)
HSL	hsl(238, 70%, 55%)
HSV	hsv(238, 73%, 87%)
CMYK	cmyk(73.3%, 71%, 0%, 13.3%)
CIE-LAB	lab(37.51, 49.31, -79.87)
CIE-LCH	lch(37.51, 93.87, 301.69°)
OKLab	oklab(48.19% 0.0092 -0.2311)
OKLCH	oklch(48.19% 0.231 272.3)
XYZ	xyz(16.6838, 9.8153, 69.4079)
Luminance	0.0982 (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

#3B40DD #DDD83B

analogous

#3B91DD #3B40DD #873BDD

triadic

#3B40DD #DD3B40 #40DD3B

tetradic

#3B40DD #DD3B91 #DDD83B #3BDD87

square

#3B40DD #DD3B91 #DDD83B #3BDD87

split-complementary

#3B40DD #DD873B #91DD3B

monochromatic

#171B86 #2025BA #3B40DD #6F73E6 #A3A6EF

Accessibility & contrast

On white

7.09

#3B40DD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#3B40DD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B40DD

7.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B40DD	#FFFFFF	#000000	##FFFFFF
##3B40DD	1.00	7.09	2.96	7.09
#FFFFFF	7.09	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060E2

Deuteranopia (green-blind)

#0050DA

Tritanopia (blue-blind)

#006C8A

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3b40dd;
/* rgb */ color: rgb(59, 64, 221);
/* oklch */ color: oklch(48.2% 0.231 272.3);

Tailwind

colors: {
  custom: {
    50: '#8976e9',
    500: '#3b40dd',
    950: '#000000',
  },
}

SCSS

$custom: #3b40dd;
$custom-light: #8976e9;
$custom-dark: #000000;

JSON

{
  "hex": "#3b40dd",
  "rgb": {
    "r": 59,
    "g": 64,
    "b": 221
  },
  "hsl": {
    "h": 238.148,
    "s": 70.435,
    "l": 54.902
  },
  "oklch": {
    "l": 0.48194,
    "c": 0.23129,
    "h": 272.3
  },
  "luminance": 0.09817
}

Semantic roles & 50–950 ramp

primary

#3B40DD

secondary

#DCDA98

accent

#E83BED

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #3B40DD

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

Preview Lab → · Contrast checker → · Palette generator →