#4038BB#4038BB

#4038BB is a dark, vivid blue. Relative luminance 0.075; OKLCH L 44.0% C 0.197 H 277.3°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#4038BB
RGB	rgb(64, 56, 187)
HSL	hsl(244, 54%, 48%)
HSV	hsv(244, 70%, 73%)
CMYK	cmyk(65.8%, 70.1%, 0%, 26.7%)
CIE-LAB	lab(32.93, 43.33, -67.63)
CIE-LCH	lch(32.93, 80.32, 302.65°)
OKLab	oklab(44.02% 0.025 -0.1953)
OKLCH	oklch(44.02% 0.197 277.3)
XYZ	xyz(12.4953, 7.5051, 47.7942)
Luminance	0.0751 (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

#4038BB #B3BB38

analogous

#3872BB #4038BB #8138BB

triadic

#4038BB #BB4038 #38BB40

tetradic

#4038BB #BB3872 #B3BB38 #38BB81

square

#4038BB #BB3872 #B3BB38 #38BB81

split-complementary

#4038BB #BB8138 #72BB38

monochromatic

#201C5D #302A8C #4038BB #6761D0 #9490DE

Accessibility & contrast

On white

8.40

#4038BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#4038BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4038BB

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4038BB	#FFFFFF	#000000	##FFFFFF
##4038BB	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)

#0053BF

Deuteranopia (green-blind)

#0048B9

Tritanopia (blue-blind)

#005C75

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #4038bb;
/* rgb */ color: rgb(64, 56, 187);
/* oklch */ color: oklch(44.0% 0.197 277.3);

Tailwind

colors: {
  custom: {
    50: '#8470d1',
    500: '#4038bb',
    950: '#000000',
  },
}

SCSS

$custom: #4038bb;
$custom-light: #8470d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4038bb",
  "rgb": {
    "r": 64,
    "g": 56,
    "b": 187
  },
  "hsl": {
    "h": 243.664,
    "s": 53.909,
    "l": 47.647
  },
  "oklch": {
    "l": 0.44022,
    "c": 0.19685,
    "h": 277.3
  },
  "luminance": 0.07506
}

Semantic roles & 50–950 ramp

primary

#4038BB

secondary

#C4C886

accent

#DD4BD4

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #4038BB

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

Preview Lab → · Contrast checker → · Palette generator →