#4181DC#4181DC

#4181DC is a mid, vivid blue. Relative luminance 0.220; OKLCH L 60.6% C 0.154 H 257.6°. Best body text is #000000 at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#4181DC
RGB	rgb(65, 129, 220)
HSL	hsl(215, 69%, 56%)
HSV	hsv(215, 70%, 86%)
CMYK	cmyk(70.5%, 41.4%, 0%, 13.7%)
CIE-LAB	lab(54.02, 9.53, -52.50)
CIE-LCH	lch(54.02, 53.36, 280.29°)
OKLab	oklab(60.62% -0.033 -0.1499)
OKLCH	oklch(60.62% 0.154 257.6)
XYZ	xyz(22.9438, 21.9892, 70.7314)
Luminance	0.2199 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4181DC #DC9C41

analogous

#41CEDC #4181DC #4E41DC

triadic

#4181DC #DC4181 #81DC41

tetradic

#4181DC #DC41CE #DC9C41 #41DC4E

square

#4181DC #DC41CE #DC9C41 #41DC4E

split-complementary

#4181DC #DC4E41 #CEDC41

monochromatic

#194889 #2362BD #4181DC #75A3E6 #A8C6EF

Accessibility & contrast

On white

3.89

#4181DC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.40

#4181DC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4181DC

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4181DC	#FFFFFF	#000000	##000000
##4181DC	1.00	3.89	5.40	5.40
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.40	21.00	1.00	1.00
##000000	5.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5689E0

Deuteranopia (green-blind)

#3C7BDA

Tritanopia (blue-blind)

#0096A4

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4181dc;
/* rgb */ color: rgb(65, 129, 220);
/* oklch */ color: oklch(60.6% 0.154 257.6);

Tailwind

colors: {
  custom: {
    50: '#87a5e7',
    500: '#4181dc',
    950: '#000000',
  },
}

SCSS

$custom: #4181dc;
$custom-light: #87a5e7;
$custom-dark: #000000;

JSON

{
  "hex": "#4181dc",
  "rgb": {
    "r": 65,
    "g": 129,
    "b": 220
  },
  "hsl": {
    "h": 215.226,
    "s": 68.889,
    "l": 55.882
  },
  "oklch": {
    "l": 0.60622,
    "c": 0.15351,
    "h": 257.6
  },
  "luminance": 0.21992
}

Semantic roles & 50–950 ramp

primary

#4181DC

secondary

#DDC29C

accent

#A33CEC

background

#F9FAFE

surface

#F1F4FC

border

#CBCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4181DC

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

Preview Lab → · Contrast checker → · Palette generator →