#4039E1#4039E1

#4039E1 is a mid, highly saturated blue. Relative luminance 0.095; OKLCH L 47.9% C 0.241 H 274.2°. Best body text is #FFFFFF at 7.27:1 contrast (WCAG AA passes).

Color values

HEX	#4039E1
RGB	rgb(64, 57, 225)
HSL	hsl(243, 74%, 55%)
HSV	hsv(243, 75%, 88%)
CMYK	cmyk(71.6%, 74.7%, 0%, 11.8%)
CIE-LAB	lab(36.84, 54.86, -83.25)
CIE-LCH	lch(36.84, 99.71, 303.38°)
OKLab	oklab(47.91% 0.0175 -0.2408)
OKLCH	oklch(47.91% 0.241 274.2)
XYZ	xyz(17.1636, 9.4508, 72.1392)
Luminance	0.0945 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 3.68

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4039E1 #DAE139

analogous

#3986E1 #4039E1 #9439E1

triadic

#4039E1 #E14039 #39E140

tetradic

#4039E1 #E13986 #DAE139 #39E194

square

#4039E1 #E13986 #DAE139 #39E194

split-complementary

#4039E1 #E19439 #86E139

monochromatic

#1A158B #241DC0 #4039E1 #736EE9 #A7A3F1

Accessibility & contrast

On white

7.27

#4039E1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#4039E1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4039E1

7.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4039E1	#FFFFFF	#000000	##FFFFFF
##4039E1	1.00	7.27	2.89	7.27
#FFFFFF	7.27	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EE6

Deuteranopia (green-blind)

#004FDE

Tritanopia (blue-blind)

#006A8B

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #4039e1;
/* rgb */ color: rgb(64, 57, 225);
/* oklch */ color: oklch(47.9% 0.241 274.2);

Tailwind

colors: {
  custom: {
    50: '#8c72ec',
    500: '#4039e1',
    950: '#000000',
  },
}

SCSS

$custom: #4039e1;
$custom-light: #8c72ec;
$custom-dark: #000000;

JSON

{
  "hex": "#4039e1",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 225
  },
  "hsl": {
    "h": 242.5,
    "s": 73.684,
    "l": 55.294
  },
  "oklch": {
    "l": 0.47914,
    "c": 0.24146,
    "h": 274.2
  },
  "luminance": 0.09452
}

Semantic roles & 50–950 ramp

primary

#4039E1

secondary

#DBDE98

accent

#F037E9

background

#F9F7FE

surface

#F2EDFD

border

#CCC8D5

text

#0E0816

muted

#7E7B84

Preview Lab

Preview with #4039E1

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

Preview Lab → · Contrast checker → · Palette generator →