#4039C3#4039C3

#4039C3 is a dark, highly saturated blue. Relative luminance 0.080; OKLCH L 44.9% C 0.206 H 276.4°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#4039C3
RGB	rgb(64, 57, 195)
HSL	hsl(243, 55%, 49%)
HSV	hsv(243, 71%, 76%)
CMYK	cmyk(67.2%, 70.8%, 0%, 23.5%)
CIE-LAB	lab(33.89, 45.35, -70.76)
CIE-LCH	lch(33.89, 84.05, 302.65°)
OKLab	oklab(44.94% 0.023 -0.2044)
OKLCH	oklch(44.94% 0.206 276.4)
XYZ	xyz(13.4246, 7.9552, 52.4472)
Luminance	0.0796 (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

#4039C3 #BCC339

analogous

#3977C3 #4039C3 #8539C3

triadic

#4039C3 #C34039 #39C340

tetradic

#4039C3 #C33977 #BCC339 #39C385

square

#4039C3 #C33977 #BCC339 #39C385

split-complementary

#4039C3 #C38539 #77C339

monochromatic

#211D64 #302B94 #4039C3 #6C67D2 #9A96E0

Accessibility & contrast

On white

8.10

#4039C3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#4039C3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4039C3

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4039C3	#FFFFFF	#000000	##FFFFFF
##4039C3	1.00	8.10	2.59	8.10
#FFFFFF	8.10	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056C7

Deuteranopia (green-blind)

#004AC0

Tritanopia (blue-blind)

#005F7A

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #4039c3;
/* rgb */ color: rgb(64, 57, 195);
/* oklch */ color: oklch(44.9% 0.206 276.4);

Tailwind

colors: {
  custom: {
    50: '#8671d6',
    500: '#4039c3',
    950: '#000000',
  },
}

SCSS

$custom: #4039c3;
$custom-light: #8671d6;
$custom-dark: #000000;

JSON

{
  "hex": "#4039c3",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 195
  },
  "hsl": {
    "h": 243.043,
    "s": 54.762,
    "l": 49.412
  },
  "oklch": {
    "l": 0.44936,
    "c": 0.20569,
    "h": 276.4
  },
  "luminance": 0.07956
}

Semantic roles & 50–950 ramp

primary

#4039C3

secondary

#C9CC8C

accent

#DE4AD7

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0D0814

muted

#7D7B83

Preview Lab

Preview with #4039C3

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

Preview Lab → · Contrast checker → · Palette generator →