#51659B#51659B

#51659B is a mid, moderate blue. Relative luminance 0.134; OKLCH L 51.5% C 0.089 H 267.8°. Best body text is #FFFFFF at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#51659B
RGB	rgb(81, 101, 155)
HSL	hsl(224, 31%, 46%)
HSV	hsv(224, 48%, 61%)
CMYK	cmyk(47.7%, 34.8%, 0%, 39.2%)
CIE-LAB	lab(43.39, 7.81, -31.75)
CIE-LCH	lch(43.39, 32.70, 283.82°)
OKLab	oklab(51.47% -0.0035 -0.0893)
OKLCH	oklch(51.47% 0.089 267.8)
XYZ	xyz(13.9615, 13.4224, 32.8591)
Luminance	0.1342 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51659B #9B8751

analogous

#518A9B #51659B #62519B

triadic

#51659B #9B5165 #659B51

tetradic

#51659B #9B518A #9B8751 #519B62

square

#51659B #9B518A #9B8751 #519B62

split-complementary

#51659B #9B6251 #8A9B51

monochromatic

#27314B #3C4B73 #51659B #7385B6 #9BA8CB

Accessibility & contrast

On white

5.70

#51659B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#51659B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51659B

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51659B	#FFFFFF	#000000	##FFFFFF
##51659B	1.00	5.70	3.68	5.70
#FFFFFF	5.70	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#516A9D

Deuteranopia (green-blind)

#49649A

Tritanopia (blue-blind)

#347079

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #51659b;
/* rgb */ color: rgb(81, 101, 155);
/* oklch */ color: oklch(51.5% 0.089 267.8);

Tailwind

colors: {
  custom: {
    50: '#8690b8',
    500: '#51659b',
    950: '#000000',
  },
}

SCSS

$custom: #51659b;
$custom-light: #8690b8;
$custom-dark: #000000;

JSON

{
  "hex": "#51659b",
  "rgb": {
    "r": 81,
    "g": 101,
    "b": 155
  },
  "hsl": {
    "h": 223.784,
    "s": 31.356,
    "l": 46.275
  },
  "oklch": {
    "l": 0.51469,
    "c": 0.08936,
    "h": 267.8
  },
  "luminance": 0.13423
}

Semantic roles & 50–950 ramp

primary

#51659B

secondary

#B8AD90

accent

#AC60C8

background

#F8F8FB

surface

#F0F0F6

border

#CBCBD0

text

#0B0C11

muted

#7C7D80

Preview Lab

Preview with #51659B

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

Preview Lab → · Contrast checker → · Palette generator →