#6399DB#6399DB

#6399DB is a light, moderate cyan. Relative luminance 0.305; OKLCH L 67.3% C 0.114 H 254.2°. Best body text is #000000 at 7.11:1 contrast (WCAG AA passes).

Color values

HEX	#6399DB
RGB	rgb(99, 153, 219)
HSL	hsl(213, 63%, 62%)
HSV	hsv(213, 55%, 86%)
CMYK	cmyk(54.8%, 30.1%, 0%, 14.1%)
CIE-LAB	lab(62.12, 1.10, -39.03)
CIE-LCH	lch(62.12, 39.04, 271.61°)
OKLab	oklab(67.32% -0.0311 -0.1098)
OKLCH	oklch(67.32% 0.114 254.2)
XYZ	xyz(29.3185, 30.5472, 71.3553)
Luminance	0.3055 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6399DB #DBA563

analogous

#63D5DB #6399DB #6963DB

triadic

#6399DB #DB6399 #99DB63

tetradic

#6399DB #DB63D5 #DBA563 #63DB69

square

#6399DB #DB63D5 #DBA563 #63DB69

split-complementary

#6399DB #DB6963 #D5DB63

monochromatic

#255C9F #3178D0 #6399DB #95BAE6 #C6DAF2

Accessibility & contrast

On white

2.95

#6399DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.11

#6399DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #6399DB

7.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6399DB	#FFFFFF	#000000	##000000
##6399DB	1.00	2.95	7.11	7.11
#FFFFFF	2.95	1.00	21.00	21.00
#000000	7.11	21.00	1.00	1.00
##000000	7.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E9DDE

Deuteranopia (green-blind)

#6F91DA

Tritanopia (blue-blind)

#11A8B0

Achromatopsia (no color)

#969696

Design tokens & code

CSS

--color: #6399db;
/* rgb */ color: rgb(99, 153, 219);
/* oklch */ color: oklch(67.3% 0.114 254.2);

Tailwind

colors: {
  custom: {
    50: '#97b6e6',
    500: '#6399db',
    950: '#000000',
  },
}

SCSS

$custom: #6399db;
$custom-light: #97b6e6;
$custom-dark: #000000;

JSON

{
  "hex": "#6399db",
  "rgb": {
    "r": 99,
    "g": 153,
    "b": 219
  },
  "hsl": {
    "h": 213,
    "s": 62.5,
    "l": 62.353
  },
  "oklch": {
    "l": 0.67323,
    "c": 0.11413,
    "h": 254.2
  },
  "luminance": 0.3055
}

Semantic roles & 50–950 ramp

primary

#6399DB

secondary

#E3CFB7

accent

#7B1BCA

background

#F9FBFE

surface

#F2F6FC

border

#CCD0D5

text

#0E1116

muted

#7E8084

Preview Lab

Preview with #6399DB

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

Preview Lab → · Contrast checker → · Palette generator →