#4180DF#4180DF

#4180DF is a mid, vivid blue. Relative luminance 0.219; OKLCH L 60.6% C 0.159 H 258.5°. Best body text is #000000 at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#4180DF
RGB	rgb(65, 128, 223)
HSL	hsl(216, 71%, 56%)
HSV	hsv(216, 71%, 87%)
CMYK	cmyk(70.9%, 42.6%, 0%, 12.5%)
CIE-LAB	lab(53.91, 11.21, -54.35)
CIE-LCH	lch(53.91, 55.50, 281.66°)
OKLab	oklab(60.59% -0.0315 -0.1554)
OKLCH	oklch(60.59% 0.159 258.5)
XYZ	xyz(23.2136, 21.8874, 72.7990)
Luminance	0.2189 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4180DF #DFA041

analogous

#41CFDF #4180DF #5141DF

triadic

#4180DF #DF4180 #80DF41

tetradic

#4180DF #DF41CF #DFA041 #41DF51

square

#4180DF #DF41CF #DFA041 #41DF51

split-complementary

#4180DF #DF5141 #CFDF41

monochromatic

#18478E #2161C2 #4180DF #75A3E8 #AAC6F1

Accessibility & contrast

On white

3.90

#4180DF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.38

#4180DF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4180DF

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4180DF	#FFFFFF	#000000	##000000
##4180DF	1.00	3.90	5.38	5.38
#FFFFFF	3.90	1.00	21.00	21.00
#000000	5.38	21.00	1.00	1.00
##000000	5.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5289E3

Deuteranopia (green-blind)

#367ADD

Tritanopia (blue-blind)

#0096A4

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #4180df;
/* rgb */ color: rgb(65, 128, 223);
/* oklch */ color: oklch(60.6% 0.159 258.5);

Tailwind

colors: {
  custom: {
    50: '#88a4e9',
    500: '#4180df',
    950: '#000000',
  },
}

SCSS

$custom: #4180df;
$custom-light: #88a4e9;
$custom-dark: #000000;

JSON

{
  "hex": "#4180df",
  "rgb": {
    "r": 65,
    "g": 128,
    "b": 223
  },
  "hsl": {
    "h": 216.076,
    "s": 71.171,
    "l": 56.471
  },
  "oklch": {
    "l": 0.60593,
    "c": 0.15856,
    "h": 258.5
  },
  "luminance": 0.2189
}

Semantic roles & 50–950 ramp

primary

#4180DF

secondary

#DEC49D

accent

#A63AEE

background

#F9FAFE

surface

#F1F3FD

border

#CBCDD5

text

#0D0F16

muted

#7E7F84

Preview Lab

Preview with #4180DF

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

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