#636799#636799

#636799 is a mid, moderate blue. Relative luminance 0.147; OKLCH L 53.1% C 0.078 H 279.9°. Best body text is #FFFFFF at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#636799
RGB	rgb(99, 103, 153)
HSL	hsl(236, 21%, 49%)
HSV	hsv(236, 35%, 60%)
CMYK	cmyk(35.3%, 32.7%, 0%, 40%)
CIE-LAB	lab(45.15, 11.00, -27.71)
CIE-LCH	lch(45.15, 29.82, 291.65°)
OKLab	oklab(53.13% 0.0134 -0.0773)
OKLCH	oklch(53.13% 0.078 279.9)
XYZ	xyz(15.7440, 14.6525, 32.1295)
Luminance	0.1465 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636799 #999563

analogous

#638299 #636799 #7A6399

triadic

#636799 #996367 #679963

tetradic

#636799 #996382 #999563 #63997A

square

#636799 #996382 #999563 #63997A

split-complementary

#636799 #997A63 #829963

monochromatic

#33354F #4B4E74 #636799 #888BB2 #ADAFCA

Accessibility & contrast

On white

5.34

#636799 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#636799 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #636799

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636799	#FFFFFF	#000000	##FFFFFF
##636799	1.00	5.34	3.93	5.34
#FFFFFF	5.34	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#586D9B

Deuteranopia (green-blind)

#556998

Tritanopia (blue-blind)

#547079

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #636799;
/* rgb */ color: rgb(99, 103, 153);
/* oklch */ color: oklch(53.1% 0.078 279.9);

Tailwind

colors: {
  custom: {
    50: '#9192b7',
    500: '#636799',
    950: '#000000',
  },
}

SCSS

$custom: #636799;
$custom-light: #9192b7;
$custom-dark: #000000;

JSON

{
  "hex": "#636799",
  "rgb": {
    "r": 99,
    "g": 103,
    "b": 153
  },
  "hsl": {
    "h": 235.556,
    "s": 21.429,
    "l": 49.412
  },
  "oklch": {
    "l": 0.5313,
    "c": 0.07842,
    "h": 279.9
  },
  "luminance": 0.14653
}

Semantic roles & 50–950 ramp

primary

#636799

secondary

#B8B79F

accent

#B86ABE

background

#F9F8FB

surface

#F1F0F6

border

#CBCBD0

text

#0D0D11

muted

#7E7D80

Preview Lab

Preview with #636799

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

Preview Lab → · Contrast checker → · Palette generator →