#4166CB#4166CB

#4166CB is a mid, vivid blue. Relative luminance 0.149; OKLCH L 53.8% C 0.162 H 266.0°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#4166CB
RGB	rgb(65, 102, 203)
HSL	hsl(224, 57%, 53%)
HSV	hsv(224, 68%, 80%)
CMYK	cmyk(68%, 49.8%, 0%, 20.4%)
CIE-LAB	lab(45.55, 20.28, -56.42)
CIE-LCH	lch(45.55, 59.95, 289.77°)
OKLab	oklab(53.78% -0.0114 -0.1619)
OKLCH	oklch(53.78% 0.162 266)
XYZ	xyz(17.7071, 14.9366, 58.4382)
Luminance	0.1494 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4166CB #CBA641

analogous

#41ABCB #4166CB #6141CB

triadic

#4166CB #CB4166 #66CB41

tetradic

#4166CB #CB41AB #CBA641 #41CB61

square

#4166CB #CB41AB #CBA641 #41CB61

split-complementary

#4166CB #CB6141 #ABCB41

monochromatic

#1F3672 #2C4CA2 #4166CB #718DD8 #A1B3E5

Accessibility & contrast

On white

5.27

#4166CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#4166CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #4166CB

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4166CB	#FFFFFF	#000000	##FFFFFF
##4166CB	1.00	5.27	3.99	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C72CF

Deuteranopia (green-blind)

#0066C9

Tritanopia (blue-blind)

#007E8F

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #4166cb;
/* rgb */ color: rgb(65, 102, 203);
/* oklch */ color: oklch(53.8% 0.162 266.0);

Tailwind

colors: {
  custom: {
    50: '#8591db',
    500: '#4166cb',
    950: '#000000',
  },
}

SCSS

$custom: #4166cb;
$custom-light: #8591db;
$custom-dark: #000000;

JSON

{
  "hex": "#4166cb",
  "rgb": {
    "r": 65,
    "g": 102,
    "b": 203
  },
  "hsl": {
    "h": 223.913,
    "s": 57.025,
    "l": 52.549
  },
  "oklch": {
    "l": 0.53781,
    "c": 0.16228,
    "h": 266
  },
  "luminance": 0.14938
}

Semantic roles & 50–950 ramp

primary

#4166CB

secondary

#D2C296

accent

#B748E0

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #4166CB

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

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