#51669D#51669D

#51669D is a mid, moderate blue. Relative luminance 0.137; OKLCH L 51.8% C 0.091 H 267.3°. Best body text is #FFFFFF at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#51669D
RGB	rgb(81, 102, 157)
HSL	hsl(223, 32%, 47%)
HSV	hsv(223, 48%, 62%)
CMYK	cmyk(48.4%, 35%, 0%, 38.4%)
CIE-LAB	lab(43.78, 7.82, -32.33)
CIE-LCH	lch(43.78, 33.26, 283.60°)
OKLab	oklab(51.8% -0.0043 -0.091)
OKLCH	oklch(51.8% 0.091 267.3)
XYZ	xyz(14.2286, 13.6855, 33.7836)
Luminance	0.1369 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51669D #9D8851

analogous

#518C9D #51669D #62519D

triadic

#51669D #9D5166 #669D51

tetradic

#51669D #9D518C #9D8851 #519D62

square

#51669D #9D518C #9D8851 #519D62

split-complementary

#51669D #9D6251 #8C9D51

monochromatic

#27324C #3C4C75 #51669D #7487B7 #9CAACC

Accessibility & contrast

On white

5.62

#51669D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#51669D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51669D

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51669D	#FFFFFF	#000000	##FFFFFF
##51669D	1.00	5.62	3.74	5.62
#FFFFFF	5.62	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#516B9F

Deuteranopia (green-blind)

#4A649C

Tritanopia (blue-blind)

#33727A

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #51669d;
/* rgb */ color: rgb(81, 102, 157);
/* oklch */ color: oklch(51.8% 0.091 267.3);

Tailwind

colors: {
  custom: {
    50: '#8691ba',
    500: '#51669d',
    950: '#000000',
  },
}

SCSS

$custom: #51669d;
$custom-light: #8691ba;
$custom-dark: #000000;

JSON

{
  "hex": "#51669d",
  "rgb": {
    "r": 81,
    "g": 102,
    "b": 157
  },
  "hsl": {
    "h": 223.421,
    "s": 31.933,
    "l": 46.667
  },
  "oklch": {
    "l": 0.518,
    "c": 0.09107,
    "h": 267.3
  },
  "luminance": 0.13686
}

Semantic roles & 50–950 ramp

primary

#51669D

secondary

#B9AE91

accent

#AB60C8

background

#F8F8FB

surface

#F0F0F6

border

#CBCBD0

text

#0B0C11

muted

#7C7D80

Preview Lab

Preview with #51669D

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

Preview Lab → · Contrast checker → · Palette generator →