#51669E#51669E

#51669E is a mid, moderate blue. Relative luminance 0.137; OKLCH L 51.9% C 0.093 H 267.5°. Best body text is #FFFFFF at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#51669E
RGB	rgb(81, 102, 158)
HSL	hsl(224, 32%, 47%)
HSV	hsv(224, 49%, 62%)
CMYK	cmyk(48.7%, 35.4%, 0%, 38%)
CIE-LAB	lab(43.83, 8.14, -32.85)
CIE-LCH	lch(43.83, 33.84, 283.92°)
OKLab	oklab(51.86% -0.004 -0.0925)
OKLCH	oklch(51.86% 0.093 267.5)
XYZ	xyz(14.3143, 13.7198, 34.2350)
Luminance	0.1372 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51669E #9E8951

analogous

#518D9E #51669E #62519E

triadic

#51669E #9E5166 #669E51

tetradic

#51669E #9E518D #9E8951 #519E62

square

#51669E #9E518D #9E8951 #519E62

split-complementary

#51669E #9E6251 #8D9E51

monochromatic

#28324D #3C4C76 #51669E #7487B8 #9DAACD

Accessibility & contrast

On white

5.61

#51669E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#51669E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51669E

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51669E	#FFFFFF	#000000	##FFFFFF
##51669E	1.00	5.61	3.74	5.61
#FFFFFF	5.61	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#516BA0

Deuteranopia (green-blind)

#49649D

Tritanopia (blue-blind)

#32727A

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #51669e;
/* rgb */ color: rgb(81, 102, 158);
/* oklch */ color: oklch(51.9% 0.093 267.5);

Tailwind

colors: {
  custom: {
    50: '#8691bb',
    500: '#51669e',
    950: '#000000',
  },
}

SCSS

$custom: #51669e;
$custom-light: #8691bb;
$custom-dark: #000000;

JSON

{
  "hex": "#51669e",
  "rgb": {
    "r": 81,
    "g": 102,
    "b": 158
  },
  "hsl": {
    "h": 223.636,
    "s": 32.218,
    "l": 46.863
  },
  "oklch": {
    "l": 0.51855,
    "c": 0.09256,
    "h": 267.5
  },
  "luminance": 0.13721
}

Semantic roles & 50–950 ramp

primary

#51669E

secondary

#BAAF91

accent

#AC5FC8

background

#F8F8FB

surface

#F0F0F6

border

#CBCBD0

text

#0B0C12

muted

#7C7D81

Preview Lab

Preview with #51669E

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

Preview Lab → · Contrast checker → · Palette generator →