#51698E#51698E

#51698E is a mid, moderate blue. Relative luminance 0.138; OKLCH L 51.7% C 0.066 H 258.9°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#51698E
RGB	rgb(81, 105, 142)
HSL	hsl(216, 27%, 44%)
HSV	hsv(216, 43%, 56%)
CMYK	cmyk(43%, 26.1%, 0%, 44.3%)
CIE-LAB	lab(43.95, 1.34, -23.13)
CIE-LCH	lch(43.95, 23.17, 273.31°)
OKLab	oklab(51.71% -0.0127 -0.0644)
OKLCH	oklch(51.71% 0.066 258.9)
XYZ	xyz(13.3258, 13.8047, 27.5483)
Luminance	0.1381 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51698E #8E7651

analogous

#51878E #51698E #57518E

triadic

#51698E #8E5169 #698E51

tetradic

#51698E #8E5187 #8E7651 #518E57

square

#51698E #8E5187 #8E7651 #518E57

split-complementary

#51698E #8E5751 #878E51

monochromatic

#252F40 #3B4C67 #51698E #6F88AD #96A8C3

Accessibility & contrast

On white

5.58

#51698E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.76

#51698E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51698E

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51698E	#FFFFFF	#000000	##FFFFFF
##51698E	1.00	5.58	3.76	5.58
#FFFFFF	5.58	1.00	21.00	1.00
#000000	3.76	21.00	1.00	21.00
##FFFFFF	5.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B6B90

Deuteranopia (green-blind)

#55658D

Tritanopia (blue-blind)

#3B7176

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #51698e;
/* rgb */ color: rgb(81, 105, 142);
/* oklch */ color: oklch(51.7% 0.066 258.9);

Tailwind

colors: {
  custom: {
    50: '#8493af',
    500: '#51698e',
    950: '#000000',
  },
}

SCSS

$custom: #51698e;
$custom-light: #8493af;
$custom-dark: #000000;

JSON

{
  "hex": "#51698e",
  "rgb": {
    "r": 81,
    "g": 105,
    "b": 142
  },
  "hsl": {
    "h": 216.393,
    "s": 27.354,
    "l": 43.725
  },
  "oklch": {
    "l": 0.51705,
    "c": 0.06564,
    "h": 258.9
  },
  "luminance": 0.13805
}

Semantic roles & 50–950 ramp

primary

#51698E

secondary

#B0A18B

accent

#9E64C4

background

#F8F9FA

surface

#EFF1F4

border

#CACBCE

text

#0B0D10

muted

#7C7E7F

Preview Lab

Preview with #51698E

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

Preview Lab → · Contrast checker → · Palette generator →