#4039B0#4039B0

#4039B0 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.2% C 0.182 H 278.2°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#4039B0
RGB	rgb(64, 57, 176)
HSL	hsl(244, 51%, 46%)
HSV	hsv(244, 68%, 69%)
CMYK	cmyk(63.6%, 67.6%, 0%, 31%)
CIE-LAB	lab(32.15, 39.14, -62.40)
CIE-LCH	lch(32.15, 73.66, 302.10°)
OKLab	oklab(43.15% 0.0259 -0.1799)
OKLCH	oklch(43.15% 0.182 278.2)
XYZ	xyz(11.4114, 7.1499, 41.8446)
Luminance	0.0715 (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

#4039B0 #A9B039

analogous

#396EB0 #4039B0 #7B39B0

triadic

#4039B0 #B04039 #39B040

tetradic

#4039B0 #B0396E #A9B039 #39B07B

square

#4039B0 #B0396E #A9B039 #39B07B

split-complementary

#4039B0 #B07B39 #6EB039

monochromatic

#1E1B54 #2F2A82 #4039B0 #625CCA #8F8AD9

Accessibility & contrast

On white

8.64

#4039B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#4039B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4039B0

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4039B0	#FFFFFF	#000000	##FFFFFF
##4039B0	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B4

Deuteranopia (green-blind)

#0047AE

Tritanopia (blue-blind)

#00586F

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #4039b0;
/* rgb */ color: rgb(64, 57, 176);
/* oklch */ color: oklch(43.2% 0.182 278.2);

Tailwind

colors: {
  custom: {
    50: '#8270c9',
    500: '#4039b0',
    950: '#000000',
  },
}

SCSS

$custom: #4039b0;
$custom-light: #8270c9;
$custom-dark: #000000;

JSON

{
  "hex": "#4039b0",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 176
  },
  "hsl": {
    "h": 243.529,
    "s": 51.073,
    "l": 45.686
  },
  "oklch": {
    "l": 0.43151,
    "c": 0.18178,
    "h": 278.2
  },
  "luminance": 0.07151
}

Semantic roles & 50–950 ramp

primary

#4039B0

secondary

#C0C481

accent

#DB4DD2

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #4039B0

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

Preview Lab → · Contrast checker → · Palette generator →