#4151B0#4151B0

#4151B0 is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.6% C 0.151 H 272.2°. Best body text is #FFFFFF at 6.93:1 contrast (WCAG AA passes).

Color values

HEX	#4151B0
RGB	rgb(65, 81, 176)
HSL	hsl(231, 46%, 47%)
HSV	hsv(231, 63%, 69%)
CMYK	cmyk(63.1%, 54%, 0%, 31%)
CIE-LAB	lab(38.10, 24.15, -52.71)
CIE-LCH	lch(38.10, 57.98, 294.62°)
OKLab	oklab(47.56% 0.0057 -0.1513)
OKLCH	oklch(47.56% 0.151 272.2)
XYZ	xyz(12.9563, 10.1422, 42.3407)
Luminance	0.1014 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4151B0 #B0A041

analogous

#4189B0 #4151B0 #6841B0

triadic

#4151B0 #B04151 #51B041

tetradic

#4151B0 #B04189 #B0A041 #41B068

square

#4151B0 #B04189 #B0A041 #41B068

split-complementary

#4151B0 #B06841 #89B041

monochromatic

#202857 #303C83 #4151B0 #6775C7 #949ED7

Accessibility & contrast

On white

6.93

#4151B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#4151B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4151B0

6.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4151B0	#FFFFFF	#000000	##FFFFFF
##4151B0	1.00	6.93	3.03	6.93
#FFFFFF	6.93	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#115FB3

Deuteranopia (green-blind)

#0055AE

Tritanopia (blue-blind)

#006778

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #4151b0;
/* rgb */ color: rgb(65, 81, 176);
/* oklch */ color: oklch(47.6% 0.151 272.2);

Tailwind

colors: {
  custom: {
    50: '#8181c8',
    500: '#4151b0',
    950: '#000000',
  },
}

SCSS

$custom: #4151b0;
$custom-light: #8181c8;
$custom-dark: #000000;

JSON

{
  "hex": "#4151b0",
  "rgb": {
    "r": 65,
    "g": 81,
    "b": 176
  },
  "hsl": {
    "h": 231.351,
    "s": 46.058,
    "l": 47.255
  },
  "oklch": {
    "l": 0.4756,
    "c": 0.15137,
    "h": 272.2
  },
  "luminance": 0.10143
}

Semantic roles & 50–950 ramp

primary

#4151B0

secondary

#C3BB8A

accent

#C352D6

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #4151B0

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

Preview Lab → · Contrast checker → · Palette generator →