#4181DD#4181DD

#4181DD is a mid, vivid blue. Relative luminance 0.220; OKLCH L 60.7% C 0.155 H 257.8°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#4181DD
RGB	rgb(65, 129, 221)
HSL	hsl(215, 70%, 56%)
HSV	hsv(215, 71%, 87%)
CMYK	cmyk(70.6%, 41.6%, 0%, 13.3%)
CIE-LAB	lab(54.07, 9.89, -52.97)
CIE-LCH	lch(54.07, 53.88, 280.58°)
OKLab	oklab(60.68% -0.0328 -0.1513)
OKLCH	oklch(60.68% 0.155 257.8)
XYZ	xyz(23.0766, 22.0423, 71.4310)
Luminance	0.2205 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4181DD #DD9D41

analogous

#41CFDD #4181DD #4F41DD

triadic

#4181DD #DD4181 #81DD41

tetradic

#4181DD #DD41CF #DD9D41 #41DD4F

square

#4181DD #DD41CF #DD9D41 #41DD4F

split-complementary

#4181DD #DD4F41 #CFDD41

monochromatic

#19488B #2262BF #4181DD #75A3E6 #A9C6F0

Accessibility & contrast

On white

3.88

#4181DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#4181DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4181DD

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4181DD	#FFFFFF	#000000	##000000
##4181DD	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5589E1

Deuteranopia (green-blind)

#3B7BDB

Tritanopia (blue-blind)

#0096A4

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4181dd;
/* rgb */ color: rgb(65, 129, 221);
/* oklch */ color: oklch(60.7% 0.155 257.8);

Tailwind

colors: {
  custom: {
    50: '#87a5e8',
    500: '#4181dd',
    950: '#000000',
  },
}

SCSS

$custom: #4181dd;
$custom-light: #87a5e8;
$custom-dark: #000000;

JSON

{
  "hex": "#4181dd",
  "rgb": {
    "r": 65,
    "g": 129,
    "b": 221
  },
  "hsl": {
    "h": 215.385,
    "s": 69.643,
    "l": 56.078
  },
  "oklch": {
    "l": 0.60684,
    "c": 0.15483,
    "h": 257.8
  },
  "luminance": 0.22045
}

Semantic roles & 50–950 ramp

primary

#4181DD

secondary

#DDC39D

accent

#A43BEC

background

#F9FAFE

surface

#F1F4FD

border

#CBCED5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4181DD

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

Preview Lab → · Contrast checker → · Palette generator →