#4037D0#4037D0

#4037D0 is a mid, highly saturated blue. Relative luminance 0.084; OKLCH L 45.9% C 0.223 H 275.6°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#4037D0
RGB	rgb(64, 55, 208)
HSL	hsl(244, 62%, 52%)
HSV	hsv(244, 74%, 82%)
CMYK	cmyk(69.2%, 73.6%, 0%, 18.4%)
CIE-LAB	lab(34.75, 50.61, -76.92)
CIE-LCH	lch(34.75, 92.07, 303.35°)
OKLab	oklab(45.93% 0.0219 -0.2223)
OKLCH	oklch(45.93% 0.223 275.6)
XYZ	xyz(14.8620, 8.3750, 60.4956)
Luminance	0.0838 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 2.52

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4037D0 #C7D037

analogous

#377BD0 #4037D0 #8C37D0

triadic

#4037D0 #D04037 #37D040

tetradic

#4037D0 #D0377B #C7D037 #37D08C

square

#4037D0 #D0377B #C7D037 #37D08C

split-complementary

#4037D0 #D08C37 #7BD037

monochromatic

#201B72 #2E26A3 #4037D0 #6F69DC #9F9AE7

Accessibility & contrast

On white

7.85

#4037D0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#4037D0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4037D0

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4037D0	#FFFFFF	#000000	##FFFFFF
##4037D0	1.00	7.85	2.68	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058D4

Deuteranopia (green-blind)

#004BCD

Tritanopia (blue-blind)

#006381

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #4037d0;
/* rgb */ color: rgb(64, 55, 208);
/* oklch */ color: oklch(45.9% 0.223 275.6);

Tailwind

colors: {
  custom: {
    50: '#8970e0',
    500: '#4037d0',
    950: '#000000',
  },
}

SCSS

$custom: #4037d0;
$custom-light: #8970e0;
$custom-dark: #000000;

JSON

{
  "hex": "#4037d0",
  "rgb": {
    "r": 64,
    "g": 55,
    "b": 208
  },
  "hsl": {
    "h": 243.529,
    "s": 61.943,
    "l": 51.569
  },
  "oklch": {
    "l": 0.4593,
    "c": 0.22341,
    "h": 275.6
  },
  "luminance": 0.08376
}

Semantic roles & 50–950 ramp

primary

#4037D0

secondary

#CFD390

accent

#E543DB

background

#F9F6FD

surface

#F2ECFB

border

#CCC7D4

text

#0D0815

muted

#7E7B83

Preview Lab

Preview with #4037D0

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

Preview Lab → · Contrast checker → · Palette generator →