#4151BB#4151BB

#4151BB is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.4% C 0.167 H 272.1°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#4151BB
RGB	rgb(65, 81, 187)
HSL	hsl(232, 48%, 49%)
HSV	hsv(232, 65%, 73%)
CMYK	cmyk(65.2%, 56.7%, 0%, 26.7%)
CIE-LAB	lab(38.89, 28.02, -57.90)
CIE-LCH	lch(38.89, 64.32, 295.82°)
OKLab	oklab(48.41% 0.0062 -0.1665)
OKLCH	oklch(48.41% 0.167 272.1)
XYZ	xyz(14.0890, 10.5953, 48.3067)
Luminance	0.1060 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4151BB #BBAB41

analogous

#418EBB #4151BB #6E41BB

triadic

#4151BB #BB4151 #51BB41

tetradic

#4151BB #BB418E #BBAB41 #41BB6E

square

#4151BB #BB418E #BBAB41 #41BB6E

split-complementary

#4151BB #BB6E41 #8EBB41

monochromatic

#212A60 #313D8E #4151BB #6D79CC #9AA3DC

Accessibility & contrast

On white

6.73

#4151BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#4151BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4151BB

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4151BB	#FFFFFF	#000000	##FFFFFF
##4151BB	1.00	6.73	3.12	6.73
#FFFFFF	6.73	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061BF

Deuteranopia (green-blind)

#0056B9

Tritanopia (blue-blind)

#006B7E

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #4151bb;
/* rgb */ color: rgb(65, 81, 187);
/* oklch */ color: oklch(48.4% 0.167 272.1);

Tailwind

colors: {
  custom: {
    50: '#8381d0',
    500: '#4151bb',
    950: '#000000',
  },
}

SCSS

$custom: #4151bb;
$custom-light: #8381d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4151bb",
  "rgb": {
    "r": 65,
    "g": 81,
    "b": 187
  },
  "hsl": {
    "h": 232.131,
    "s": 48.413,
    "l": 49.412
  },
  "oklch": {
    "l": 0.48406,
    "c": 0.16665,
    "h": 272.1
  },
  "luminance": 0.10597
}

Semantic roles & 50–950 ramp

primary

#4151BB

secondary

#C8C190

accent

#C650D8

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0A14

muted

#7D7C82

Preview Lab

Preview with #4151BB

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

Preview Lab → · Contrast checker → · Palette generator →