#51587F#51587F

#51587F is a mid, moderate blue. Relative luminance 0.103; OKLCH L 47.1% C 0.064 H 275.9°. Best body text is #FFFFFF at 6.88:1 contrast (WCAG AA passes).

Color values

HEX	#51587F
RGB	rgb(81, 88, 127)
HSL	hsl(231, 22%, 41%)
HSV	hsv(231, 36%, 50%)
CMYK	cmyk(36.2%, 30.7%, 0%, 50.2%)
CIE-LAB	lab(38.31, 7.44, -22.81)
CIE-LCH	lch(38.31, 24.00, 288.07°)
OKLab	oklab(47.09% 0.0065 -0.0635)
OKLCH	oklch(47.09% 0.064 275.9)
XYZ	xyz(10.7127, 10.2607, 21.4906)
Luminance	0.1026 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51587F #7F7851

analogous

#516F7F #51587F #61517F

triadic

#51587F #7F5158 #587F51

tetradic

#51587F #7F516F #7F7851 #517F61

square

#51587F #7F516F #7F7851 #517F61

split-complementary

#51587F #7F6151 #6F7F51

monochromatic

#212434 #393E5A #51587F #6C74A1 #9197B9

Accessibility & contrast

On white

6.88

#51587F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#51587F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51587F

6.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51587F	#FFFFFF	#000000	##FFFFFF
##51587F	1.00	6.88	3.05	6.88
#FFFFFF	6.88	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C5C81

Deuteranopia (green-blind)

#49587E

Tritanopia (blue-blind)

#446066

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #51587f;
/* rgb */ color: rgb(81, 88, 127);
/* oklch */ color: oklch(47.1% 0.064 275.9);

Tailwind

colors: {
  custom: {
    50: '#8387a4',
    500: '#51587f',
    950: '#000000',
  },
}

SCSS

$custom: #51587f;
$custom-light: #8387a4;
$custom-dark: #000000;

JSON

{
  "hex": "#51587f",
  "rgb": {
    "r": 81,
    "g": 88,
    "b": 127
  },
  "hsl": {
    "h": 230.87,
    "s": 22.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.47087,
    "c": 0.06382,
    "h": 275.9
  },
  "luminance": 0.10261
}

Semantic roles & 50–950 ramp

primary

#51587F

secondary

#A6A186

accent

#B269BF

background

#F8F8FA

surface

#EFEFF4

border

#CACACE

text

#0B0B0F

muted

#7C7C7F

Preview Lab

Preview with #51587F

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

Preview Lab → · Contrast checker → · Palette generator →