#4181CB#4181CB

#4181CB is a mid, vivid cyan. Relative luminance 0.211; OKLCH L 59.6% C 0.131 H 253.7°. Best body text is #000000 at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#4181CB
RGB	rgb(65, 129, 203)
HSL	hsl(212, 57%, 53%)
HSV	hsv(212, 68%, 80%)
CMYK	cmyk(68%, 36.5%, 0%, 20.4%)
CIE-LAB	lab(53.10, 3.51, -44.35)
CIE-LCH	lch(53.10, 44.49, 274.52°)
OKLab	oklab(59.61% -0.0369 -0.126)
OKLCH	oklch(59.61% 0.131 253.7)
XYZ	xyz(20.8058, 21.1340, 59.4711)
Luminance	0.2114 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4181CB #CB8B41

analogous

#41C6CB #4181CB #4641CB

triadic

#4181CB #CB4181 #81CB41

tetradic

#4181CB #CB41C6 #CB8B41 #41CB46

square

#4181CB #CB41C6 #CB8B41 #41CB46

split-complementary

#4181CB #CB4641 #C6CB41

monochromatic

#1F4672 #2C63A2 #4181CB #71A1D8 #A1C1E5

Accessibility & contrast

On white

4.02

#4181CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.23

#4181CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4181CB

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4181CB	#FFFFFF	#000000	##000000
##4181CB	1.00	4.02	5.23	5.23
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.23	21.00	1.00	1.00
##000000	5.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6086CE

Deuteranopia (green-blind)

#4C79CA

Tritanopia (blue-blind)

#00929C

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #4181cb;
/* rgb */ color: rgb(65, 129, 203);
/* oklch */ color: oklch(59.6% 0.131 253.7);

Tailwind

colors: {
  custom: {
    50: '#84a5db',
    500: '#4181cb',
    950: '#000000',
  },
}

SCSS

$custom: #4181cb;
$custom-light: #84a5db;
$custom-dark: #000000;

JSON

{
  "hex": "#4181cb",
  "rgb": {
    "r": 65,
    "g": 129,
    "b": 203
  },
  "hsl": {
    "h": 212.174,
    "s": 57.025,
    "l": 52.549
  },
  "oklch": {
    "l": 0.59607,
    "c": 0.13134,
    "h": 253.7
  },
  "luminance": 0.21136
}

Semantic roles & 50–950 ramp

primary

#4181CB

secondary

#D2B696

accent

#9948E0

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #4181CB

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

Preview Lab → · Contrast checker → · Palette generator →