#3C40BB#3C40BB

#3C40BB is a mid, vivid blue. Relative luminance 0.082; OKLCH L 45.0% C 0.189 H 274.4°. Best body text is #FFFFFF at 7.95:1 contrast (WCAG AA passes).

Color values

HEX	#3C40BB
RGB	rgb(60, 64, 187)
HSL	hsl(238, 51%, 48%)
HSV	hsv(238, 68%, 73%)
CMYK	cmyk(67.9%, 65.8%, 0%, 26.7%)
CIE-LAB	lab(34.42, 38.02, -65.19)
CIE-LCH	lch(34.42, 75.47, 300.25°)
OKLab	oklab(45.03% 0.0145 -0.1882)
OKLCH	oklch(45.03% 0.189 274.4)
XYZ	xyz(12.6635, 8.2141, 47.9222)
Luminance	0.0822 (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

#3C40BB #BBB73C

analogous

#3C7FBB #3C40BB #773CBB

triadic

#3C40BB #BB3C40 #40BB3C

tetradic

#3C40BB #BB3C7F #BBB73C #3CBB77

square

#3C40BB #BB3C7F #BBB73C #3CBB77

split-complementary

#3C40BB #BB773C #7FBB3C

monochromatic

#1E205E #2D308D #3C40BB #6669CE #9597DD

Accessibility & contrast

On white

7.95

#3C40BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#3C40BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3C40BB

7.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3C40BB	#FFFFFF	#000000	##FFFFFF
##3C40BB	1.00	7.95	2.64	7.95
#FFFFFF	7.95	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057BF

Deuteranopia (green-blind)

#004BB9

Tritanopia (blue-blind)

#006078

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3c40bb;
/* rgb */ color: rgb(60, 64, 187);
/* oklch */ color: oklch(45.0% 0.189 274.4);

Tailwind

colors: {
  custom: {
    50: '#8275d0',
    500: '#3c40bb',
    950: '#000000',
  },
}

SCSS

$custom: #3c40bb;
$custom-light: #8275d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3c40bb",
  "rgb": {
    "r": 60,
    "g": 64,
    "b": 187
  },
  "hsl": {
    "h": 238.11,
    "s": 51.417,
    "l": 48.431
  },
  "oklch": {
    "l": 0.45031,
    "c": 0.18876,
    "h": 274.4
  },
  "luminance": 0.08215
}

Semantic roles & 50–950 ramp

primary

#3C40BB

secondary

#C8C68B

accent

#D64DDB

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3C40BB

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

Preview Lab → · Contrast checker → · Palette generator →