#5153AB#5153AB

#5153AB is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.7% C 0.138 H 279.0°. Best body text is #FFFFFF at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#5153AB
RGB	rgb(81, 83, 171)
HSL	hsl(239, 36%, 49%)
HSV	hsv(239, 53%, 67%)
CMYK	cmyk(52.6%, 51.5%, 0%, 32.9%)
CIE-LAB	lab(39.37, 24.35, -47.64)
CIE-LCH	lch(39.37, 53.51, 297.08°)
OKLab	oklab(48.69% 0.0215 -0.1359)
OKLCH	oklch(48.69% 0.138 279)
XYZ	xyz(13.8350, 10.8753, 39.8903)
Luminance	0.1088 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5153AB #ABA951

analogous

#5180AB #5153AB #7C51AB

triadic

#5153AB #AB5153 #53AB51

tetradic

#5153AB #AB5180 #ABA951 #51AB7C

square

#5153AB #AB5180 #ABA951 #51AB7C

split-complementary

#5153AB #AB7C51 #80AB51

monochromatic

#2A2B58 #3D3F81 #5153AB #797BC0 #A3A4D3

Accessibility & contrast

On white

6.61

#5153AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#5153AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5153AB

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5153AB	#FFFFFF	#000000	##FFFFFF
##5153AB	1.00	6.61	3.18	6.61
#FFFFFF	6.61	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2760AE

Deuteranopia (green-blind)

#1C59A9

Tritanopia (blue-blind)

#2B6677

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #5153ab;
/* rgb */ color: rgb(81, 83, 171);
/* oklch */ color: oklch(48.7% 0.138 279.0);

Tailwind

colors: {
  custom: {
    50: '#8983c4',
    500: '#5153ab',
    950: '#000000',
  },
}

SCSS

$custom: #5153ab;
$custom-light: #8983c4;
$custom-dark: #000000;

JSON

{
  "hex": "#5153ab",
  "rgb": {
    "r": 81,
    "g": 83,
    "b": 171
  },
  "hsl": {
    "h": 238.667,
    "s": 35.714,
    "l": 49.412
  },
  "oklch": {
    "l": 0.48691,
    "c": 0.13762,
    "h": 279
  },
  "luminance": 0.10876
}

Semantic roles & 50–950 ramp

primary

#5153AB

secondary

#C1C097

accent

#C95CCC

background

#F8F8FC

surface

#F0EFF8

border

#CBCAD1

text

#0C0A13

muted

#7D7C82

Preview Lab

Preview with #5153AB

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

Preview Lab → · Contrast checker → · Palette generator →