#5166A5#5166A5

#5166A5 is a mid, moderate blue. Relative luminance 0.140; OKLCH L 52.2% C 0.103 H 268.7°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#5166A5
RGB	rgb(81, 102, 165)
HSL	hsl(225, 34%, 48%)
HSV	hsv(225, 51%, 65%)
CMYK	cmyk(50.9%, 38.2%, 0%, 35.3%)
CIE-LAB	lab(44.19, 10.38, -36.42)
CIE-LCH	lch(44.19, 37.87, 285.91°)
OKLab	oklab(52.25% -0.0023 -0.1029)
OKLCH	oklch(52.25% 0.103 268.7)
XYZ	xyz(14.9340, 13.9677, 37.4991)
Luminance	0.1397 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5166A5 #A59051

analogous

#5190A5 #5166A5 #6651A5

triadic

#5166A5 #A55166 #66A551

tetradic

#5166A5 #A55190 #A59051 #51A566

square

#5166A5 #A55190 #A59051 #51A566

split-complementary

#5166A5 #A56651 #90A551

monochromatic

#293353 #3D4D7C #5166A5 #7788BC #A0ACD0

Accessibility & contrast

On white

5.54

#5166A5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#5166A5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5166A5

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5166A5	#FFFFFF	#000000	##FFFFFF
##5166A5	1.00	5.54	3.79	5.54
#FFFFFF	5.54	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E6CA8

Deuteranopia (green-blind)

#4565A4

Tritanopia (blue-blind)

#2D737D

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #5166a5;
/* rgb */ color: rgb(81, 102, 165);
/* oklch */ color: oklch(52.2% 0.103 268.7);

Tailwind

colors: {
  custom: {
    50: '#8791c0',
    500: '#5166a5',
    950: '#000000',
  },
}

SCSS

$custom: #5166a5;
$custom-light: #8791c0;
$custom-dark: #000000;

JSON

{
  "hex": "#5166a5",
  "rgb": {
    "r": 81,
    "g": 102,
    "b": 165
  },
  "hsl": {
    "h": 225,
    "s": 34.146,
    "l": 48.235
  },
  "oklch": {
    "l": 0.52249,
    "c": 0.10291,
    "h": 268.7
  },
  "luminance": 0.13969
}

Semantic roles & 50–950 ramp

primary

#5166A5

secondary

#BDB394

accent

#AF5ECA

background

#F8F8FB

surface

#F0F0F7

border

#CBCBD0

text

#0C0C12

muted

#7D7D81

Preview Lab

Preview with #5166A5

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

Preview Lab → · Contrast checker → · Palette generator →