#4151CF#4151CF

#4151CF is a mid, vivid blue. Relative luminance 0.115; OKLCH L 50.0% C 0.193 H 271.9°. Best body text is #FFFFFF at 6.36:1 contrast (WCAG AA passes).

Color values

HEX	#4151CF
RGB	rgb(65, 81, 207)
HSL	hsl(233, 60%, 53%)
HSV	hsv(233, 69%, 81%)
CMYK	cmyk(68.6%, 60.9%, 0%, 18.8%)
CIE-LAB	lab(40.43, 35.02, -67.02)
CIE-LCH	lch(40.43, 75.62, 297.59°)
OKLab	oklab(50.03% 0.0063 -0.1933)
OKLCH	oklch(50.03% 0.193 271.9)
XYZ	xyz(16.3811, 11.5121, 60.3782)
Luminance	0.1151 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4151CF #CFBF41

analogous

#4198CF #4151CF #7841CF

triadic

#4151CF #CF4151 #51CF41

tetradic

#4151CF #CF4198 #CFBF41 #41CF78

square

#4151CF #CF4198 #CFBF41 #41CF78

split-complementary

#4151CF #CF7841 #98CF41

monochromatic

#1E2877 #2B39A8 #4151CF #727EDB #A3AAE8

Accessibility & contrast

On white

6.36

#4151CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#4151CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4151CF

6.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4151CF	#FFFFFF	#000000	##FFFFFF
##4151CF	1.00	6.36	3.30	6.36
#FFFFFF	6.36	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0066D3

Deuteranopia (green-blind)

#0059CD

Tritanopia (blue-blind)

#007188

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #4151cf;
/* rgb */ color: rgb(65, 81, 207);
/* oklch */ color: oklch(50.0% 0.193 271.9);

Tailwind

colors: {
  custom: {
    50: '#8781df',
    500: '#4151cf',
    950: '#000000',
  },
}

SCSS

$custom: #4151cf;
$custom-light: #8781df;
$custom-dark: #000000;

JSON

{
  "hex": "#4151cf",
  "rgb": {
    "r": 65,
    "g": 81,
    "b": 207
  },
  "hsl": {
    "h": 233.239,
    "s": 59.664,
    "l": 53.333
  },
  "oklch": {
    "l": 0.50032,
    "c": 0.19343,
    "h": 271.9
  },
  "luminance": 0.11514
}

Semantic roles & 50–950 ramp

primary

#4151CF

secondary

#D4CE97

accent

#D145E3

background

#F9F7FD

surface

#F1EEFB

border

#CBC9D4

text

#0D0A15

muted

#7E7C83

Preview Lab

Preview with #4151CF

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

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