#51538C#51538C

#51538C is a mid, moderate blue. Relative luminance 0.098; OKLCH L 46.7% C 0.092 H 280.7°. Best body text is #FFFFFF at 7.08:1 contrast (WCAG AA passes).

Color values

HEX	#51538C
RGB	rgb(81, 83, 140)
HSL	hsl(238, 27%, 43%)
HSV	hsv(238, 42%, 55%)
CMYK	cmyk(42.1%, 40.7%, 0%, 45.1%)
CIE-LAB	lab(37.53, 14.52, -31.96)
CIE-LCH	lch(37.53, 35.10, 294.43°)
OKLab	oklab(46.7% 0.017 -0.09)
OKLCH	oklch(46.7% 0.092 280.7)
XYZ	xyz(11.2188, 9.8288, 26.1119)
Luminance	0.0983 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51538C #8C8A51

analogous

#51708C #51538C #6C518C

triadic

#51538C #8C5153 #538C51

tetradic

#51538C #8C5170 #8C8A51 #518C6C

square

#51538C #8C5170 #8C8A51 #518C6C

split-complementary

#51538C #8C6C51 #708C51

monochromatic

#24253E #3B3C65 #51538C #6F71AC #9597C2

Accessibility & contrast

On white

7.08

#51538C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#51538C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #51538C

7.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51538C	#FFFFFF	#000000	##FFFFFF
##51538C	1.00	7.08	2.97	7.08
#FFFFFF	7.08	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F5B8E

Deuteranopia (green-blind)

#3C568B

Tritanopia (blue-blind)

#3F5E69

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #51538c;
/* rgb */ color: rgb(81, 83, 140);
/* oklch */ color: oklch(46.7% 0.092 280.7);

Tailwind

colors: {
  custom: {
    50: '#8583ae',
    500: '#51538c',
    950: '#000000',
  },
}

SCSS

$custom: #51538c;
$custom-light: #8583ae;
$custom-dark: #000000;

JSON

{
  "hex": "#51538c",
  "rgb": {
    "r": 81,
    "g": 83,
    "b": 140
  },
  "hsl": {
    "h": 237.966,
    "s": 26.697,
    "l": 43.333
  },
  "oklch": {
    "l": 0.46704,
    "c": 0.09156,
    "h": 280.7
  },
  "luminance": 0.09829
}

Semantic roles & 50–950 ramp

primary

#51538C

secondary

#AFAE8A

accent

#C065C3

background

#F8F8FA

surface

#EFEFF4

border

#CACACE

text

#0B0A10

muted

#7C7C7F

Preview Lab

Preview with #51538C

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

Preview Lab → · Contrast checker → · Palette generator →