#4181BF#4181BF

#4181BF is a mid, moderate cyan. Relative luminance 0.206; OKLCH L 58.9% C 0.116 H 249.8°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#4181BF
RGB	rgb(65, 129, 191)
HSL	hsl(210, 50%, 50%)
HSV	hsv(210, 66%, 75%)
CMYK	cmyk(66%, 32.5%, 0%, 25.1%)
CIE-LAB	lab(52.49, -0.67, -38.47)
CIE-LCH	lch(52.49, 38.48, 269.00°)
OKLab	oklab(58.94% -0.0401 -0.1089)
OKLCH	oklch(58.94% 0.116 249.8)
XYZ	xyz(19.4307, 20.5840, 52.2292)
Luminance	0.2059 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4181BF #BF7F41

analogous

#41BFBE #4181BF #4142BF

triadic

#4181BF #BF4181 #81BF41

tetradic

#4181BF #BE41BF #BF7F41 #42BF41

square

#4181BF #BE41BF #BF7F41 #42BF41

split-complementary

#4181BF #BF4142 #BFBE41

monochromatic

#224364 #316292 #4181BF #6F9FCE #9DBEDE

Accessibility & contrast

On white

4.10

#4181BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#4181BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4181BF

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4181BF	#FFFFFF	#000000	##000000
##4181BF	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6684C2

Deuteranopia (green-blind)

#5478BE

Tritanopia (blue-blind)

#009097

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #4181bf;
/* rgb */ color: rgb(65, 129, 191);
/* oklch */ color: oklch(58.9% 0.116 249.8);

Tailwind

colors: {
  custom: {
    50: '#82a5d2',
    500: '#4181bf',
    950: '#000000',
  },
}

SCSS

$custom: #4181bf;
$custom-light: #82a5d2;
$custom-dark: #000000;

JSON

{
  "hex": "#4181bf",
  "rgb": {
    "r": 65,
    "g": 129,
    "b": 191
  },
  "hsl": {
    "h": 209.524,
    "s": 49.606,
    "l": 50.196
  },
  "oklch": {
    "l": 0.58935,
    "c": 0.11603,
    "h": 249.8
  },
  "luminance": 0.20586
}

Semantic roles & 50–950 ramp

primary

#4181BF

secondary

#CAAD92

accent

#934FD9

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0C0F14

muted

#7D7F82

Preview Lab

Preview with #4181BF

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

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