#4180DD#4180DD

#4180DD is a mid, vivid blue. Relative luminance 0.218; OKLCH L 60.5% C 0.156 H 258.2°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#4180DD
RGB	rgb(65, 128, 221)
HSL	hsl(216, 70%, 56%)
HSV	hsv(216, 71%, 87%)
CMYK	cmyk(70.6%, 42.1%, 0%, 13.3%)
CIE-LAB	lab(53.79, 10.50, -53.41)
CIE-LCH	lch(53.79, 54.44, 281.12°)
OKLab	oklab(60.47% -0.0319 -0.1526)
OKLCH	oklch(60.47% 0.156 258.2)
XYZ	xyz(22.9456, 21.7802, 71.3873)
Luminance	0.2178 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4180DD #DD9E41

analogous

#41CEDD #4180DD #5041DD

triadic

#4180DD #DD4180 #80DD41

tetradic

#4180DD #DD41CE #DD9E41 #41DD50

square

#4180DD #DD41CE #DD9E41 #41DD50

split-complementary

#4180DD #DD5041 #CEDD41

monochromatic

#19478B #2261BF #4180DD #75A3E6 #A9C5F0

Accessibility & contrast

On white

3.92

#4180DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#4180DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4180DD

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4180DD	#FFFFFF	#000000	##000000
##4180DD	1.00	3.92	5.36	5.36
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5388E1

Deuteranopia (green-blind)

#397ADB

Tritanopia (blue-blind)

#0096A4

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4180dd;
/* rgb */ color: rgb(65, 128, 221);
/* oklch */ color: oklch(60.5% 0.156 258.2);

Tailwind

colors: {
  custom: {
    50: '#87a4e8',
    500: '#4180dd',
    950: '#000000',
  },
}

SCSS

$custom: #4180dd;
$custom-light: #87a4e8;
$custom-dark: #000000;

JSON

{
  "hex": "#4180dd",
  "rgb": {
    "r": 65,
    "g": 128,
    "b": 221
  },
  "hsl": {
    "h": 215.769,
    "s": 69.643,
    "l": 56.078
  },
  "oklch": {
    "l": 0.60468,
    "c": 0.15593,
    "h": 258.2
  },
  "luminance": 0.21783
}

Semantic roles & 50–950 ramp

primary

#4180DD

secondary

#DDC39D

accent

#A53BEC

background

#F9FAFE

surface

#F1F3FD

border

#CBCDD5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4180DD

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

Preview Lab → · Contrast checker → · Palette generator →