#51549B#51549B

#51549B is a mid, moderate blue. Relative luminance 0.105; OKLCH L 47.8% C 0.113 H 279.4°. Best body text is #FFFFFF at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#51549B
RGB	rgb(81, 84, 155)
HSL	hsl(238, 31%, 46%)
HSV	hsv(238, 48%, 61%)
CMYK	cmyk(47.7%, 45.8%, 0%, 39.2%)
CIE-LAB	lab(38.65, 18.57, -39.25)
CIE-LCH	lch(38.65, 43.42, 295.32°)
OKLab	oklab(47.83% 0.0184 -0.1113)
OKLCH	oklch(47.83% 0.113 279.4)
XYZ	xyz(12.4783, 10.4559, 32.3647)
Luminance	0.1046 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51549B #9B9851

analogous

#51799B #51549B #73519B

triadic

#51549B #9B5154 #549B51

tetradic

#51549B #9B5179 #9B9851 #519B73

square

#51549B #9B5179 #9B9851 #519B73

split-complementary

#51549B #9B7351 #799B51

monochromatic

#27284B #3C3E73 #51549B #7376B6 #9B9DCB

Accessibility & contrast

On white

6.79

#51549B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#51549B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51549B

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51549B	#FFFFFF	#000000	##FFFFFF
##51549B	1.00	6.79	3.09	6.79
#FFFFFF	6.79	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#375E9E

Deuteranopia (green-blind)

#325899

Tritanopia (blue-blind)

#376370

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #51549b;
/* rgb */ color: rgb(81, 84, 155);
/* oklch */ color: oklch(47.8% 0.113 279.4);

Tailwind

colors: {
  custom: {
    50: '#8684b9',
    500: '#51549b',
    950: '#000000',
  },
}

SCSS

$custom: #51549b;
$custom-light: #8684b9;
$custom-dark: #000000;

JSON

{
  "hex": "#51549b",
  "rgb": {
    "r": 81,
    "g": 84,
    "b": 155
  },
  "hsl": {
    "h": 237.568,
    "s": 31.356,
    "l": 46.275
  },
  "oklch": {
    "l": 0.47828,
    "c": 0.1128,
    "h": 279.4
  },
  "luminance": 0.10457
}

Semantic roles & 50–950 ramp

primary

#51549B

secondary

#B8B690

accent

#C360C8

background

#F8F8FB

surface

#F0EFF6

border

#CBCAD0

text

#0B0A11

muted

#7C7C80

Preview Lab

Preview with #51549B

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

Preview Lab → · Contrast checker → · Palette generator →