#51688D#51688D

#51688D is a mid, moderate blue. Relative luminance 0.136; OKLCH L 51.4% C 0.065 H 259.7°. Best body text is #FFFFFF at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#51688D
RGB	rgb(81, 104, 141)
HSL	hsl(217, 27%, 44%)
HSV	hsv(217, 43%, 55%)
CMYK	cmyk(42.6%, 26.2%, 0%, 44.7%)
CIE-LAB	lab(43.61, 1.65, -23.06)
CIE-LCH	lch(43.61, 23.12, 274.09°)
OKLab	oklab(51.43% -0.0116 -0.0642)
OKLCH	oklch(51.43% 0.065 259.7)
XYZ	xyz(13.1498, 13.5723, 27.1210)
Luminance	0.1357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51688D #8D7651

analogous

#51868D #51688D #58518D

triadic

#51688D #8D5168 #688D51

tetradic

#51688D #8D5186 #8D7651 #518D58

square

#51688D #8D5186 #8D7651 #518D58

split-complementary

#51688D #8D5851 #868D51

monochromatic

#242F3F #3B4B66 #51688D #6F86AC #96A7C3

Accessibility & contrast

On white

5.65

#51688D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#51688D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51688D

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51688D	#FFFFFF	#000000	##FFFFFF
##51688D	1.00	5.65	3.71	5.65
#FFFFFF	5.65	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B6A8F

Deuteranopia (green-blind)

#54648C

Tritanopia (blue-blind)

#3C7075

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #51688d;
/* rgb */ color: rgb(81, 104, 141);
/* oklch */ color: oklch(51.4% 0.065 259.7);

Tailwind

colors: {
  custom: {
    50: '#8493ae',
    500: '#51688d',
    950: '#000000',
  },
}

SCSS

$custom: #51688d;
$custom-light: #8493ae;
$custom-dark: #000000;

JSON

{
  "hex": "#51688d",
  "rgb": {
    "r": 81,
    "g": 104,
    "b": 141
  },
  "hsl": {
    "h": 217,
    "s": 27.027,
    "l": 43.529
  },
  "oklch": {
    "l": 0.51426,
    "c": 0.06524,
    "h": 259.7
  },
  "luminance": 0.13573
}

Semantic roles & 50–950 ramp

primary

#51688D

secondary

#AFA18A

accent

#9F64C3

background

#F8F9FA

surface

#EFF1F4

border

#CACBCE

text

#0B0D10

muted

#7C7E7F

Preview Lab

Preview with #51688D

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

Preview Lab → · Contrast checker → · Palette generator →