#4039D9#4039D9

#4039D9 is a mid, highly saturated blue. Relative luminance 0.090; OKLCH L 47.1% C 0.232 H 274.7°. Best body text is #FFFFFF at 7.49:1 contrast (WCAG AA passes).

Color values

HEX	#4039D9
RGB	rgb(64, 57, 217)
HSL	hsl(243, 68%, 54%)
HSV	hsv(243, 74%, 85%)
CMYK	cmyk(70.5%, 73.7%, 0%, 14.9%)
CIE-LAB	lab(36.03, 52.37, -80.00)
CIE-LCH	lch(36.03, 95.61, 303.21°)
OKLab	oklab(47.1% 0.0191 -0.2313)
OKLCH	oklch(47.1% 0.232 274.7)
XYZ	xyz(16.0977, 9.0244, 66.5257)
Luminance	0.0903 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 2.73

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4039D9 #D2D939

analogous

#3982D9 #4039D9 #9039D9

triadic

#4039D9 #D94039 #39D940

tetradic

#4039D9 #D93982 #D2D939 #39D990

square

#4039D9 #D93982 #D2D939 #39D990

split-complementary

#4039D9 #D99039 #82D939

monochromatic

#1D187F #2922B3 #4039D9 #726CE3 #A3A0ED

Accessibility & contrast

On white

7.49

#4039D9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#4039D9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4039D9

7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4039D9	#FFFFFF	#000000	##FFFFFF
##4039D9	1.00	7.49	2.81	7.49
#FFFFFF	7.49	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CDE

Deuteranopia (green-blind)

#004DD6

Tritanopia (blue-blind)

#006786

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #4039d9;
/* rgb */ color: rgb(64, 57, 217);
/* oklch */ color: oklch(47.1% 0.232 274.7);

Tailwind

colors: {
  custom: {
    50: '#8b72e6',
    500: '#4039d9',
    950: '#000000',
  },
}

SCSS

$custom: #4039d9;
$custom-light: #8b72e6;
$custom-dark: #000000;

JSON

{
  "hex": "#4039d9",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 217
  },
  "hsl": {
    "h": 242.625,
    "s": 67.797,
    "l": 53.725
  },
  "oklch": {
    "l": 0.47104,
    "c": 0.23214,
    "h": 274.7
  },
  "luminance": 0.09026
}

Semantic roles & 50–950 ramp

primary

#4039D9

secondary

#D6D995

accent

#EB3DE3

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #4039D9

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

Preview Lab → · Contrast checker → · Palette generator →