#4040CB#4040CB

#4040CB is a mid, highly saturated blue. Relative luminance 0.091; OKLCH L 46.8% C 0.208 H 274.8°. Best body text is #FFFFFF at 7.46:1 contrast (WCAG AA passes).

Color values

HEX	#4040CB
RGB	rgb(64, 64, 203)
HSL	hsl(240, 57%, 52%)
HSV	hsv(240, 68%, 80%)
CMYK	cmyk(68.5%, 68.5%, 0%, 20.4%)
CIE-LAB	lab(36.11, 43.91, -71.77)
CIE-LCH	lch(36.11, 84.14, 301.46°)
OKLab	oklab(46.76% 0.0174 -0.2074)
OKLCH	oklch(46.76% 0.208 274.8)
XYZ	xyz(14.7237, 9.0672, 57.4625)
Luminance	0.0907 (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

#4040CB #CBCB40

analogous

#4086CB #4040CB #8640CB

triadic

#4040CB #CB4040 #40CB40

tetradic

#4040CB #CB4086 #CBCB40 #40CB86

square

#4040CB #CB4086 #CBCB40 #40CB86

split-complementary

#4040CB #CB8640 #86CB40

monochromatic

#1F1F72 #2C2CA2 #4040CB #7070D8 #A0A0E5

Accessibility & contrast

On white

7.46

#4040CB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#4040CB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4040CB

7.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4040CB	#FFFFFF	#000000	##FFFFFF
##4040CB	1.00	7.46	2.81	7.46
#FFFFFF	7.46	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BCF

Deuteranopia (green-blind)

#004EC8

Tritanopia (blue-blind)

#006680

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #4040cb;
/* rgb */ color: rgb(64, 64, 203);
/* oklch */ color: oklch(46.8% 0.208 274.8);

Tailwind

colors: {
  custom: {
    50: '#8776dc',
    500: '#4040cb',
    950: '#000000',
  },
}

SCSS

$custom: #4040cb;
$custom-light: #8776dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4040cb",
  "rgb": {
    "r": 64,
    "g": 64,
    "b": 203
  },
  "hsl": {
    "h": 240,
    "s": 57.202,
    "l": 52.353
  },
  "oklch": {
    "l": 0.46759,
    "c": 0.20809,
    "h": 274.8
  },
  "luminance": 0.09069
}

Semantic roles & 50–950 ramp

primary

#4040CB

secondary

#D2D295

accent

#E047E0

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4040CB

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

Preview Lab → · Contrast checker → · Palette generator →