#4037BD#4037BD

#4037BD is a dark, highly saturated blue. Relative luminance 0.075; OKLCH L 44.1% C 0.200 H 277.3°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#4037BD
RGB	rgb(64, 55, 189)
HSL	hsl(244, 55%, 48%)
HSV	hsv(244, 71%, 74%)
CMYK	cmyk(66.1%, 70.9%, 0%, 25.9%)
CIE-LAB	lab(32.91, 44.55, -68.85)
CIE-LCH	lch(32.91, 82.01, 302.91°)
OKLab	oklab(44.06% 0.0253 -0.1988)
OKLCH	oklch(44.06% 0.2 277.3)
XYZ	xyz(12.6629, 7.4954, 48.9137)
Luminance	0.0750 (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

#4037BD #B4BD37

analogous

#3771BD #4037BD #8337BD

triadic

#4037BD #BD4037 #37BD40

tetradic

#4037BD #BD3771 #B4BD37 #37BD83

square

#4037BD #BD3771 #B4BD37 #37BD83

split-complementary

#4037BD #BD8337 #71BD37

monochromatic

#201B5E #30298E #4037BD #6860D1 #9590DF

Accessibility & contrast

On white

8.40

#4037BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#4037BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4037BD

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4037BD	#FFFFFF	#000000	##FFFFFF
##4037BD	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053C1

Deuteranopia (green-blind)

#0048BB

Tritanopia (blue-blind)

#005C76

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #4037bd;
/* rgb */ color: rgb(64, 55, 189);
/* oklch */ color: oklch(44.1% 0.200 277.3);

Tailwind

colors: {
  custom: {
    50: '#856fd2',
    500: '#4037bd',
    950: '#000000',
  },
}

SCSS

$custom: #4037bd;
$custom-light: #856fd2;
$custom-dark: #000000;

JSON

{
  "hex": "#4037bd",
  "rgb": {
    "r": 64,
    "g": 55,
    "b": 189
  },
  "hsl": {
    "h": 244.03,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.44063,
    "c": 0.20041,
    "h": 277.3
  },
  "luminance": 0.07496
}

Semantic roles & 50–950 ramp

primary

#4037BD

secondary

#C5C986

accent

#DE4AD4

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #4037BD

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

Preview Lab → · Contrast checker → · Palette generator →