#4043CB#4043CB

#4043CB is a mid, highly saturated blue. Relative luminance 0.094; OKLCH L 47.2% C 0.205 H 274.3°. Best body text is #FFFFFF at 7.28:1 contrast (WCAG AA passes).

Color values

HEX	#4043CB
RGB	rgb(64, 67, 203)
HSL	hsl(239, 57%, 52%)
HSV	hsv(239, 68%, 80%)
CMYK	cmyk(68.5%, 67%, 0%, 20.4%)
CIE-LAB	lab(36.77, 42.12, -70.69)
CIE-LCH	lch(36.77, 82.29, 300.79°)
OKLab	oklab(47.23% 0.0154 -0.2042)
OKLCH	oklch(47.23% 0.205 274.3)
XYZ	xyz(14.8974, 9.4147, 57.5205)
Luminance	0.0942 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 2.92

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4043CB #CBC840

analogous

#4089CB #4043CB #8340CB

triadic

#4043CB #CB4043 #43CB40

tetradic

#4043CB #CB4089 #CBC840 #40CB83

square

#4043CB #CB4089 #CBC840 #40CB83

split-complementary

#4043CB #CB8340 #89CB40

monochromatic

#1F2172 #2C2FA2 #4043CB #7072D8 #A0A2E5

Accessibility & contrast

On white

7.28

#4043CB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#4043CB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4043CB

7.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4043CB	#FFFFFF	#000000	##FFFFFF
##4043CB	1.00	7.28	2.88	7.28
#FFFFFF	7.28	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DCF

Deuteranopia (green-blind)

#0050C8

Tritanopia (blue-blind)

#006781

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #4043cb;
/* rgb */ color: rgb(64, 67, 203);
/* oklch */ color: oklch(47.2% 0.205 274.3);

Tailwind

colors: {
  custom: {
    50: '#8778dc',
    500: '#4043cb',
    950: '#000000',
  },
}

SCSS

$custom: #4043cb;
$custom-light: #8778dc;
$custom-dark: #000000;

JSON

{
  "hex": "#4043cb",
  "rgb": {
    "r": 64,
    "g": 67,
    "b": 203
  },
  "hsl": {
    "h": 238.705,
    "s": 57.202,
    "l": 52.353
  },
  "oklch": {
    "l": 0.47234,
    "c": 0.20478,
    "h": 274.3
  },
  "luminance": 0.09416
}

Semantic roles & 50–950 ramp

primary

#4043CB

secondary

#D2D095

accent

#DD47E0

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #4043CB

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

Preview Lab → · Contrast checker → · Palette generator →