#4051BB#4051BB

#4051BB is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.3% C 0.167 H 271.8°. Best body text is #FFFFFF at 6.75:1 contrast (WCAG AA passes).

Color values

HEX	#4051BB
RGB	rgb(64, 81, 187)
HSL	hsl(232, 49%, 49%)
HSV	hsv(232, 66%, 73%)
CMYK	cmyk(65.8%, 56.7%, 0%, 26.7%)
CIE-LAB	lab(38.83, 27.86, -58.00)
CIE-LCH	lch(38.83, 64.34, 295.66°)
OKLab	oklab(48.35% 0.0052 -0.1668)
OKLCH	oklch(48.35% 0.167 271.8)
XYZ	xyz(14.0234, 10.5614, 48.3036)
Luminance	0.1056 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4051BB #BBAA40

analogous

#408FBB #4051BB #6D40BB

triadic

#4051BB #BB4051 #51BB40

tetradic

#4051BB #BB408F #BBAA40 #40BB6D

square

#4051BB #BB408F #BBAA40 #40BB6D

split-complementary

#4051BB #BB6D40 #8FBB40

monochromatic

#212A60 #303D8D #4051BB #6C79CD #99A2DC

Accessibility & contrast

On white

6.75

#4051BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#4051BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4051BB

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4051BB	#FFFFFF	#000000	##FFFFFF
##4051BB	1.00	6.75	3.11	6.75
#FFFFFF	6.75	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061BF

Deuteranopia (green-blind)

#0056B9

Tritanopia (blue-blind)

#006B7E

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #4051bb;
/* rgb */ color: rgb(64, 81, 187);
/* oklch */ color: oklch(48.3% 0.167 271.8);

Tailwind

colors: {
  custom: {
    50: '#8381d0',
    500: '#4051bb',
    950: '#000000',
  },
}

SCSS

$custom: #4051bb;
$custom-light: #8381d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4051bb",
  "rgb": {
    "r": 64,
    "g": 81,
    "b": 187
  },
  "hsl": {
    "h": 231.707,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.48347,
    "c": 0.16692,
    "h": 271.8
  },
  "luminance": 0.10563
}

Semantic roles & 50–950 ramp

primary

#4051BB

secondary

#C8C08F

accent

#C64FD9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #4051BB

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

Preview Lab → · Contrast checker → · Palette generator →