#6399BF#6399BF

#6399BF is a light, moderate cyan. Relative luminance 0.292; OKLCH L 66.0% C 0.081 H 240.3°. Best body text is #000000 at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#6399BF
RGB	rgb(99, 153, 191)
HSL	hsl(205, 42%, 57%)
HSV	hsv(205, 48%, 75%)
CMYK	cmyk(48.2%, 19.9%, 0%, 25.1%)
CIE-LAB	lab(60.95, -7.38, -25.19)
CIE-LCH	lch(60.95, 26.25, 253.67°)
OKLab	oklab(66.02% -0.04 -0.07)
OKLCH	oklch(66.02% 0.081 240.3)
XYZ	xyz(25.9375, 29.1948, 53.5485)
Luminance	0.2920 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6399BF #BF8963

analogous

#63BFB7 #6399BF #636BBF

triadic

#6399BF #BF6399 #99BF63

tetradic

#6399BF #B763BF #BF8963 #6BBF63

square

#6399BF #B763BF #BF8963 #6BBF63

split-complementary

#6399BF #BF636B #BFB763

monochromatic

#315A77 #437BA2 #6399BF #8EB5D1 #BAD2E3

Accessibility & contrast

On white

3.07

#6399BF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.84

#6399BF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6399BF

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6399BF	#FFFFFF	#000000	##000000
##6399BF	1.00	3.07	6.84	6.84
#FFFFFF	3.07	1.00	21.00	21.00
#000000	6.84	21.00	1.00	1.00
##000000	6.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8899C1

Deuteranopia (green-blind)

#7C8FBE

Tritanopia (blue-blind)

#38A2A6

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #6399bf;
/* rgb */ color: rgb(99, 153, 191);
/* oklch */ color: oklch(66.0% 0.081 240.3);

Tailwind

colors: {
  custom: {
    50: '#94b7d2',
    500: '#6399bf',
    950: '#000000',
  },
}

SCSS

$custom: #6399bf;
$custom-light: #94b7d2;
$custom-dark: #000000;

JSON

{
  "hex": "#6399bf",
  "rgb": {
    "r": 99,
    "g": 153,
    "b": 191
  },
  "hsl": {
    "h": 204.783,
    "s": 41.818,
    "l": 56.863
  },
  "oklch": {
    "l": 0.66016,
    "c": 0.08066,
    "h": 240.3
  },
  "luminance": 0.29197
}

Semantic roles & 50–950 ramp

primary

#6399BF

secondary

#D2BCAC

accent

#8956D2

background

#F9FBFC

surface

#F2F6F9

border

#CCD0D2

text

#0E1114

muted

#7E8082

Preview Lab

Preview with #6399BF

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

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