#6399AA#6399AA

#6399AA is a light, moderate cyan. Relative luminance 0.283; OKLCH L 65.2% C 0.062 H 219.8°. Best body text is #000000 at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#6399AA
RGB	rgb(99, 153, 170)
HSL	hsl(194, 29%, 53%)
HSV	hsv(194, 42%, 67%)
CMYK	cmyk(41.8%, 10%, 0%, 33.3%)
CIE-LAB	lab(60.19, -13.30, -14.50)
CIE-LCH	lch(60.19, 19.68, 227.46°)
OKLab	oklab(65.16% -0.0479 -0.0399)
OKLCH	oklch(65.16% 0.062 219.8)
XYZ	xyz(23.7900, 28.3358, 42.2382)
Luminance	0.2834 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6399AA #AA7463

analogous

#63AA97 #6399AA #6375AA

triadic

#6399AA #AA6399 #99AA63

tetradic

#6399AA #9763AA #AA7463 #75AA63

square

#6399AA #9763AA #AA7463 #75AA63

split-complementary

#6399AA #AA6375 #AA9763

monochromatic

#34555F #497887 #6399AA #8BB3C0 #B2CDD5

Accessibility & contrast

On white

3.15

#6399AA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.67

#6399AA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6399AA

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6399AA	#FFFFFF	#000000	##000000
##6399AA	1.00	3.15	6.67	6.67
#FFFFFF	3.15	1.00	21.00	21.00
#000000	6.67	21.00	1.00	1.00
##000000	6.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8E96AB

Deuteranopia (green-blind)

#838DAA

Tritanopia (blue-blind)

#459F9E

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #6399aa;
/* rgb */ color: rgb(99, 153, 170);
/* oklch */ color: oklch(65.2% 0.062 219.8);

Tailwind

colors: {
  custom: {
    50: '#93b7c3',
    500: '#6399aa',
    950: '#000000',
  },
}

SCSS

$custom: #6399aa;
$custom-light: #93b7c3;
$custom-dark: #000000;

JSON

{
  "hex": "#6399aa",
  "rgb": {
    "r": 99,
    "g": 153,
    "b": 170
  },
  "hsl": {
    "h": 194.366,
    "s": 29.461,
    "l": 52.745
  },
  "oklch": {
    "l": 0.65159,
    "c": 0.06235,
    "h": 219.8
  },
  "luminance": 0.28337
}

Semantic roles & 50–950 ramp

primary

#6399AA

secondary

#C4ACA5

accent

#7A62C6

background

#F9FBFB

surface

#F2F6F7

border

#CCD0D0

text

#0D1112

muted

#7E8081

Preview Lab

Preview with #6399AA

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

Preview Lab → · Contrast checker → · Palette generator →