#4151AD#4151AD

#4151AD is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.3% C 0.147 H 272.2°. Best body text is #FFFFFF at 6.99:1 contrast (WCAG AA passes).

Color values

HEX	#4151AD
RGB	rgb(65, 81, 173)
HSL	hsl(231, 45%, 47%)
HSV	hsv(231, 62%, 68%)
CMYK	cmyk(62.4%, 53.2%, 0%, 32.2%)
CIE-LAB	lab(37.89, 23.10, -51.27)
CIE-LCH	lch(37.89, 56.24, 294.25°)
OKLab	oklab(47.34% 0.0055 -0.147)
OKLCH	oklch(47.34% 0.147 272.2)
XYZ	xyz(12.6627, 10.0248, 40.7947)
Luminance	0.1003 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4151AD #AD9D41

analogous

#4187AD #4151AD #6741AD

triadic

#4151AD #AD4151 #51AD41

tetradic

#4151AD #AD4187 #AD9D41 #41AD67

square

#4151AD #AD4187 #AD9D41 #41AD67

split-complementary

#4151AD #AD6741 #87AD41

monochromatic

#202754 #303C81 #4151AD #6674C5 #929CD6

Accessibility & contrast

On white

6.99

#4151AD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#4151AD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4151AD

6.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4151AD	#FFFFFF	#000000	##FFFFFF
##4151AD	1.00	6.99	3.01	6.99
#FFFFFF	6.99	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#185EB0

Deuteranopia (green-blind)

#0055AB

Tritanopia (blue-blind)

#006677

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #4151ad;
/* rgb */ color: rgb(65, 81, 173);
/* oklch */ color: oklch(47.3% 0.147 272.2);

Tailwind

colors: {
  custom: {
    50: '#8081c6',
    500: '#4151ad',
    950: '#000000',
  },
}

SCSS

$custom: #4151ad;
$custom-light: #8081c6;
$custom-dark: #000000;

JSON

{
  "hex": "#4151ad",
  "rgb": {
    "r": 65,
    "g": 81,
    "b": 173
  },
  "hsl": {
    "h": 231.111,
    "s": 45.378,
    "l": 46.667
  },
  "oklch": {
    "l": 0.47335,
    "c": 0.14713,
    "h": 272.2
  },
  "luminance": 0.10026
}

Semantic roles & 50–950 ramp

primary

#4151AD

secondary

#C2B988

accent

#C253D5

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #4151AD

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

Preview Lab → · Contrast checker → · Palette generator →