#4151B1#4151B1

#4151B1 is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.6% C 0.153 H 272.2°. Best body text is #FFFFFF at 6.92:1 contrast (WCAG AA passes).

Color values

HEX	#4151B1
RGB	rgb(65, 81, 177)
HSL	hsl(231, 46%, 47%)
HSV	hsv(231, 63%, 69%)
CMYK	cmyk(63.3%, 54.2%, 0%, 30.6%)
CIE-LAB	lab(38.17, 24.50, -53.19)
CIE-LCH	lch(38.17, 58.56, 294.74°)
OKLab	oklab(47.64% 0.0058 -0.1527)
OKLCH	oklch(47.64% 0.153 272.2)
XYZ	xyz(13.0556, 10.1819, 42.8637)
Luminance	0.1018 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4151B1 #B1A141

analogous

#4189B1 #4151B1 #6941B1

triadic

#4151B1 #B14151 #51B141

tetradic

#4151B1 #B14189 #B1A141 #41B169

square

#4151B1 #B14189 #B1A141 #41B169

split-complementary

#4151B1 #B16941 #89B141

monochromatic

#202857 #313D84 #4151B1 #6875C7 #959ED8

Accessibility & contrast

On white

6.92

#4151B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#4151B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4151B1

6.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4151B1	#FFFFFF	#000000	##FFFFFF
##4151B1	1.00	6.92	3.04	6.92
#FFFFFF	6.92	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F5FB4

Deuteranopia (green-blind)

#0055AF

Tritanopia (blue-blind)

#006879

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #4151b1;
/* rgb */ color: rgb(65, 81, 177);
/* oklch */ color: oklch(47.6% 0.153 272.2);

Tailwind

colors: {
  custom: {
    50: '#8181c9',
    500: '#4151b1',
    950: '#000000',
  },
}

SCSS

$custom: #4151b1;
$custom-light: #8181c9;
$custom-dark: #000000;

JSON

{
  "hex": "#4151b1",
  "rgb": {
    "r": 65,
    "g": 81,
    "b": 177
  },
  "hsl": {
    "h": 231.429,
    "s": 46.281,
    "l": 47.451
  },
  "oklch": {
    "l": 0.47635,
    "c": 0.15278,
    "h": 272.2
  },
  "luminance": 0.10183
}

Semantic roles & 50–950 ramp

primary

#4151B1

secondary

#C3BB8A

accent

#C352D6

background

#F8F7FC

surface

#F0EEF8

border

#CBC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #4151B1

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

Preview Lab → · Contrast checker → · Palette generator →