#4039BD#4039BD

#4039BD is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.4% C 0.198 H 277.0°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#4039BD
RGB	rgb(64, 57, 189)
HSL	hsl(243, 54%, 48%)
HSV	hsv(243, 70%, 74%)
CMYK	cmyk(66.1%, 69.8%, 0%, 25.9%)
CIE-LAB	lab(33.33, 43.40, -68.16)
CIE-LCH	lch(33.33, 80.81, 302.49°)
OKLab	oklab(44.36% 0.024 -0.1968)
OKLCH	oklch(44.36% 0.198 277)
XYZ	xyz(12.7598, 7.6893, 48.9460)
Luminance	0.0769 (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

#4039BD #B6BD39

analogous

#3974BD #4039BD #8239BD

triadic

#4039BD #BD4039 #39BD40

tetradic

#4039BD #BD3974 #B6BD39 #39BD82

square

#4039BD #BD3974 #B6BD39 #39BD82

split-complementary

#4039BD #BD8239 #74BD39

monochromatic

#201D5F #302B8E #4039BD #6963D0 #9692DE

Accessibility & contrast

On white

8.27

#4039BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#4039BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4039BD

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4039BD	#FFFFFF	#000000	##FFFFFF
##4039BD	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054C1

Deuteranopia (green-blind)

#0049BB

Tritanopia (blue-blind)

#005D77

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #4039bd;
/* rgb */ color: rgb(64, 57, 189);
/* oklch */ color: oklch(44.4% 0.198 277.0);

Tailwind

colors: {
  custom: {
    50: '#8571d2',
    500: '#4039bd',
    950: '#000000',
  },
}

SCSS

$custom: #4039bd;
$custom-light: #8571d2;
$custom-dark: #000000;

JSON

{
  "hex": "#4039bd",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 189
  },
  "hsl": {
    "h": 243.182,
    "s": 53.659,
    "l": 48.235
  },
  "oklch": {
    "l": 0.44363,
    "c": 0.19826,
    "h": 277
  },
  "luminance": 0.0769
}

Semantic roles & 50–950 ramp

primary

#4039BD

secondary

#C6C989

accent

#DD4BD5

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #4039BD

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

Preview Lab → · Contrast checker → · Palette generator →