#4151B2#4151B2

#4151B2 is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.7% C 0.154 H 272.2°. Best body text is #FFFFFF at 6.90:1 contrast (WCAG AA passes).

Color values

HEX	#4151B2
RGB	rgb(65, 81, 178)
HSL	hsl(232, 47%, 48%)
HSV	hsv(232, 63%, 70%)
CMYK	cmyk(63.5%, 54.5%, 0%, 30.2%)
CIE-LAB	lab(38.24, 24.86, -53.66)
CIE-LCH	lch(38.24, 59.14, 294.85°)
OKLab	oklab(47.71% 0.0059 -0.1541)
OKLCH	oklch(47.71% 0.154 272.2)
XYZ	xyz(13.1556, 10.2219, 43.3906)
Luminance	0.1022 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4151B2 #B2A241

analogous

#418AB2 #4151B2 #6941B2

triadic

#4151B2 #B24151 #51B241

tetradic

#4151B2 #B2418A #B2A241 #41B269

square

#4151B2 #B2418A #B2A241 #41B269

split-complementary

#4151B2 #B26941 #8AB241

monochromatic

#202858 #313D85 #4151B2 #6876C8 #959FD8

Accessibility & contrast

On white

6.90

#4151B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#4151B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4151B2

6.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4151B2	#FFFFFF	#000000	##FFFFFF
##4151B2	1.00	6.90	3.04	6.90
#FFFFFF	6.90	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B5FB5

Deuteranopia (green-blind)

#0055B0

Tritanopia (blue-blind)

#006879

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #4151b2;
/* rgb */ color: rgb(65, 81, 178);
/* oklch */ color: oklch(47.7% 0.154 272.2);

Tailwind

colors: {
  custom: {
    50: '#8181ca',
    500: '#4151b2',
    950: '#000000',
  },
}

SCSS

$custom: #4151b2;
$custom-light: #8181ca;
$custom-dark: #000000;

JSON

{
  "hex": "#4151b2",
  "rgb": {
    "r": 65,
    "g": 81,
    "b": 178
  },
  "hsl": {
    "h": 231.504,
    "s": 46.502,
    "l": 47.647
  },
  "oklch": {
    "l": 0.47711,
    "c": 0.15418,
    "h": 272.2
  },
  "luminance": 0.10223
}

Semantic roles & 50–950 ramp

primary

#4151B2

secondary

#C4BC8B

accent

#C352D6

background

#F8F7FC

surface

#F0EEF8

border

#CBC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #4151B2

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

Preview Lab → · Contrast checker → · Palette generator →