#51599D#51599D

#51599D is a mid, moderate blue. Relative luminance 0.113; OKLCH L 49.0% C 0.109 H 276.5°. Best body text is #FFFFFF at 6.43:1 contrast (WCAG AA passes).

Color values

HEX	#51599D
RGB	rgb(81, 89, 157)
HSL	hsl(234, 32%, 47%)
HSV	hsv(234, 48%, 62%)
CMYK	cmyk(48.4%, 43.3%, 0%, 38.4%)
CIE-LAB	lab(40.13, 16.02, -38.10)
CIE-LCH	lch(40.13, 41.33, 292.80°)
OKLab	oklab(48.99% 0.0124 -0.1079)
OKLCH	oklch(48.99% 0.109 276.5)
XYZ	xyz(13.0496, 11.3277, 33.3906)
Luminance	0.1133 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51599D #9D9551

analogous

#517F9D #51599D #6F519D

triadic

#51599D #9D5159 #599D51

tetradic

#51599D #9D517F #9D9551 #519D6F

square

#51599D #9D517F #9D9551 #519D6F

split-complementary

#51599D #9D6F51 #7F9D51

monochromatic

#272B4C #3C4275 #51599D #747BB7 #9CA1CC

Accessibility & contrast

On white

6.43

#51599D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#51599D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51599D

6.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51599D	#FFFFFF	#000000	##FFFFFF
##51599D	1.00	6.43	3.27	6.43
#FFFFFF	6.43	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E62A0

Deuteranopia (green-blind)

#385C9B

Tritanopia (blue-blind)

#356773

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #51599d;
/* rgb */ color: rgb(81, 89, 157);
/* oklch */ color: oklch(49.0% 0.109 276.5);

Tailwind

colors: {
  custom: {
    50: '#8687ba',
    500: '#51599d',
    950: '#000000',
  },
}

SCSS

$custom: #51599d;
$custom-light: #8687ba;
$custom-dark: #000000;

JSON

{
  "hex": "#51599d",
  "rgb": {
    "r": 81,
    "g": 89,
    "b": 157
  },
  "hsl": {
    "h": 233.684,
    "s": 31.933,
    "l": 46.667
  },
  "oklch": {
    "l": 0.48991,
    "c": 0.10859,
    "h": 276.5
  },
  "luminance": 0.11328
}

Semantic roles & 50–950 ramp

primary

#51599D

secondary

#B9B591

accent

#BD60C8

background

#F8F8FB

surface

#F0EFF6

border

#CBCAD0

text

#0B0B11

muted

#7C7C80

Preview Lab

Preview with #51599D

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

Preview Lab → · Contrast checker → · Palette generator →