#4181BC#4181BC

#4181BC is a mid, moderate cyan. Relative luminance 0.205; OKLCH L 58.8% C 0.112 H 248.6°. Best body text is #000000 at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#4181BC
RGB	rgb(65, 129, 188)
HSL	hsl(209, 49%, 50%)
HSV	hsv(209, 65%, 74%)
CMYK	cmyk(65.4%, 31.4%, 0%, 26.3%)
CIE-LAB	lab(52.35, -1.71, -36.98)
CIE-LCH	lch(52.35, 37.02, 267.36°)
OKLab	oklab(58.77% -0.041 -0.1045)
OKLCH	oklch(58.77% 0.112 248.6)
XYZ	xyz(19.1040, 20.4533, 50.5083)
Luminance	0.2046 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4181BC #BC7C41

analogous

#41BCBA #4181BC #4144BC

triadic

#4181BC #BC4181 #81BC41

tetradic

#4181BC #BA41BC #BC7C41 #44BC41

square

#4181BC #BA41BC #BC7C41 #44BC41

split-complementary

#4181BC #BC4144 #BCBA41

monochromatic

#224361 #31628F #4181BC #6E9FCD #9BBDDC

Accessibility & contrast

On white

4.12

#4181BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.09

#4181BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4181BC

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4181BC	#FFFFFF	#000000	##000000
##4181BC	1.00	4.12	5.09	5.09
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.09	21.00	1.00	1.00
##000000	5.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6783BF

Deuteranopia (green-blind)

#5678BB

Tritanopia (blue-blind)

#008F96

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #4181bc;
/* rgb */ color: rgb(65, 129, 188);
/* oklch */ color: oklch(58.8% 0.112 248.6);

Tailwind

colors: {
  custom: {
    50: '#82a5d0',
    500: '#4181bc',
    950: '#000000',
  },
}

SCSS

$custom: #4181bc;
$custom-light: #82a5d0;
$custom-dark: #000000;

JSON

{
  "hex": "#4181bc",
  "rgb": {
    "r": 65,
    "g": 129,
    "b": 188
  },
  "hsl": {
    "h": 208.78,
    "s": 48.617,
    "l": 49.608
  },
  "oklch": {
    "l": 0.58774,
    "c": 0.11229,
    "h": 248.6
  },
  "luminance": 0.20455
}

Semantic roles & 50–950 ramp

primary

#4181BC

secondary

#C9AB90

accent

#9150D8

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #4181BC

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

Preview Lab → · Contrast checker → · Palette generator →