#51689B#51689B

#51689B is a mid, moderate blue. Relative luminance 0.140; OKLCH L 52.1% C 0.086 H 265.1°. Best body text is #FFFFFF at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#51689B
RGB	rgb(81, 104, 155)
HSL	hsl(221, 31%, 46%)
HSV	hsv(221, 48%, 61%)
CMYK	cmyk(47.7%, 32.9%, 0%, 39.2%)
CIE-LAB	lab(44.26, 5.95, -30.40)
CIE-LCH	lch(44.26, 30.97, 281.08°)
OKLab	oklab(52.14% -0.0074 -0.0853)
OKLCH	oklch(52.14% 0.086 265.1)
XYZ	xyz(14.2581, 14.0156, 32.9580)
Luminance	0.1402 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51689B #9B8451

analogous

#518D9B #51689B #5F519B

triadic

#51689B #9B5168 #689B51

tetradic

#51689B #9B518D #9B8451 #519B5F

square

#51689B #9B518D #9B8451 #519B5F

split-complementary

#51689B #9B5F51 #8D9B51

monochromatic

#27324B #3C4D73 #51689B #7388B6 #9BAACB

Accessibility & contrast

On white

5.52

#51689B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#51689B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51689B

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51689B	#FFFFFF	#000000	##FFFFFF
##51689B	1.00	5.52	3.80	5.52
#FFFFFF	5.52	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#556C9D

Deuteranopia (green-blind)

#4D669A

Tritanopia (blue-blind)

#34737A

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #51689b;
/* rgb */ color: rgb(81, 104, 155);
/* oklch */ color: oklch(52.1% 0.086 265.1);

Tailwind

colors: {
  custom: {
    50: '#8692b8',
    500: '#51689b',
    950: '#000000',
  },
}

SCSS

$custom: #51689b;
$custom-light: #8692b8;
$custom-dark: #000000;

JSON

{
  "hex": "#51689b",
  "rgb": {
    "r": 81,
    "g": 104,
    "b": 155
  },
  "hsl": {
    "h": 221.351,
    "s": 31.356,
    "l": 46.275
  },
  "oklch": {
    "l": 0.52138,
    "c": 0.08567,
    "h": 265.1
  },
  "luminance": 0.14017
}

Semantic roles & 50–950 ramp

primary

#51689B

secondary

#B8AB90

accent

#A760C8

background

#F8F8FB

surface

#F0F0F6

border

#CBCBD0

text

#0B0D11

muted

#7C7D80

Preview Lab

Preview with #51689B

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

Preview Lab → · Contrast checker → · Palette generator →