#51699B#51699B

#51699B is a mid, moderate blue. Relative luminance 0.142; OKLCH L 52.4% C 0.084 H 264.1°. Best body text is #FFFFFF at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#51699B
RGB	rgb(81, 105, 155)
HSL	hsl(221, 31%, 46%)
HSV	hsv(221, 48%, 61%)
CMYK	cmyk(47.7%, 32.3%, 0%, 39.2%)
CIE-LAB	lab(44.54, 5.33, -29.95)
CIE-LCH	lch(44.54, 30.42, 280.10°)
OKLab	oklab(52.36% -0.0087 -0.084)
OKLCH	oklch(52.36% 0.084 264.1)
XYZ	xyz(14.3594, 14.2181, 32.9917)
Luminance	0.1422 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51699B #9B8351

analogous

#518E9B #51699B #5E519B

triadic

#51699B #9B5169 #699B51

tetradic

#51699B #9B518E #9B8351 #519B5E

square

#51699B #9B518E #9B8351 #519B5E

split-complementary

#51699B #9B5E51 #8E9B51

monochromatic

#27334B #3C4E73 #51699B #7389B6 #9BABCB

Accessibility & contrast

On white

5.46

#51699B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#51699B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51699B

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51699B	#FFFFFF	#000000	##FFFFFF
##51699B	1.00	5.46	3.84	5.46
#FFFFFF	5.46	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#566D9D

Deuteranopia (green-blind)

#4E669A

Tritanopia (blue-blind)

#34747B

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #51699b;
/* rgb */ color: rgb(81, 105, 155);
/* oklch */ color: oklch(52.4% 0.084 264.1);

Tailwind

colors: {
  custom: {
    50: '#8693b8',
    500: '#51699b',
    950: '#000000',
  },
}

SCSS

$custom: #51699b;
$custom-light: #8693b8;
$custom-dark: #000000;

JSON

{
  "hex": "#51699b",
  "rgb": {
    "r": 81,
    "g": 105,
    "b": 155
  },
  "hsl": {
    "h": 220.541,
    "s": 31.356,
    "l": 46.275
  },
  "oklch": {
    "l": 0.52362,
    "c": 0.08449,
    "h": 264.1
  },
  "luminance": 0.14219
}

Semantic roles & 50–950 ramp

primary

#51699B

secondary

#B8AB90

accent

#A660C8

background

#F8F9FB

surface

#F0F1F6

border

#CBCBD0

text

#0B0D11

muted

#7C7E80

Preview Lab

Preview with #51699B

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

Preview Lab → · Contrast checker → · Palette generator →