#3E40C9#3E40C9

#3E40C9 is a mid, highly saturated blue. Relative luminance 0.089; OKLCH L 46.4% C 0.206 H 274.3°. Best body text is #FFFFFF at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#3E40C9
RGB	rgb(62, 64, 201)
HSL	hsl(239, 56%, 52%)
HSV	hsv(239, 69%, 79%)
CMYK	cmyk(69.2%, 68.2%, 0%, 21.2%)
CIE-LAB	lab(35.80, 43.00, -71.12)
CIE-LCH	lch(35.80, 83.11, 301.16°)
OKLab	oklab(46.45% 0.0153 -0.2055)
OKLCH	oklch(46.45% 0.206 274.3)
XYZ	xyz(14.3591, 8.9066, 56.2094)
Luminance	0.0891 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 2.81

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3E40C9 #C9C73E

analogous

#3E86C9 #3E40C9 #823EC9

triadic

#3E40C9 #C93E40 #40C93E

tetradic

#3E40C9 #C93E86 #C9C73E #3EC982

square

#3E40C9 #C93E86 #C9C73E #3EC982

split-complementary

#3E40C9 #C9823E #86C93E

monochromatic

#1F206E #2C2E9E #3E40C9 #6E6FD6 #9E9FE4

Accessibility & contrast

On white

7.55

#3E40C9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#3E40C9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3E40C9

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3E40C9	#FFFFFF	#000000	##FFFFFF
##3E40C9	1.00	7.55	2.78	7.55
#FFFFFF	7.55	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BCD

Deuteranopia (green-blind)

#004EC6

Tritanopia (blue-blind)

#00657F

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3e40c9;
/* rgb */ color: rgb(62, 64, 201);
/* oklch */ color: oklch(46.4% 0.206 274.3);

Tailwind

colors: {
  custom: {
    50: '#8676db',
    500: '#3e40c9',
    950: '#000000',
  },
}

SCSS

$custom: #3e40c9;
$custom-light: #8676db;
$custom-dark: #000000;

JSON

{
  "hex": "#3e40c9",
  "rgb": {
    "r": 62,
    "g": 64,
    "b": 201
  },
  "hsl": {
    "h": 239.137,
    "s": 56.275,
    "l": 51.569
  },
  "oklch": {
    "l": 0.46447,
    "c": 0.20608,
    "h": 274.3
  },
  "luminance": 0.08908
}

Semantic roles & 50–950 ramp

primary

#3E40C9

secondary

#D0CF93

accent

#DD48E0

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #3E40C9

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

Preview Lab → · Contrast checker → · Palette generator →