#6388BB#6388BB

#6388BB is a light, moderate cyan. Relative luminance 0.238; OKLCH L 62.0% C 0.088 H 256.6°. Best body text is #000000 at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#6388BB
RGB	rgb(99, 136, 187)
HSL	hsl(215, 39%, 56%)
HSV	hsv(215, 47%, 73%)
CMYK	cmyk(47.1%, 27.3%, 0%, 26.7%)
CIE-LAB	lab(55.93, 1.14, -30.68)
CIE-LCH	lch(55.93, 30.71, 272.12°)
OKLab	oklab(62.01% -0.0205 -0.0858)
OKLCH	oklch(62.01% 0.088 256.6)
XYZ	xyz(22.9164, 23.8473, 50.3995)
Luminance	0.2385 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6388BB #BB9663

analogous

#63B4BB #6388BB #6A63BB

triadic

#6388BB #BB6388 #88BB63

tetradic

#6388BB #BB63B4 #BB9663 #63BB6A

square

#6388BB #BB63B4 #BB9663 #63BB6A

split-complementary

#6388BB #BB6A63 #B4BB63

monochromatic

#324D72 #44699D #6388BB #8EA9CE #B8C9E0

Accessibility & contrast

On white

3.64

#6388BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.77

#6388BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6388BB

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6388BB	#FFFFFF	#000000	##000000
##6388BB	1.00	3.64	5.77	5.77
#FFFFFF	3.64	1.00	21.00	21.00
#000000	5.77	21.00	1.00	1.00
##000000	5.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#758BBD

Deuteranopia (green-blind)

#6A82BA

Tritanopia (blue-blind)

#3E939A

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #6388bb;
/* rgb */ color: rgb(99, 136, 187);
/* oklch */ color: oklch(62.0% 0.088 256.6);

Tailwind

colors: {
  custom: {
    50: '#94aacf',
    500: '#6388bb',
    950: '#000000',
  },
}

SCSS

$custom: #6388bb;
$custom-light: #94aacf;
$custom-dark: #000000;

JSON

{
  "hex": "#6388bb",
  "rgb": {
    "r": 99,
    "g": 136,
    "b": 187
  },
  "hsl": {
    "h": 214.773,
    "s": 39.286,
    "l": 56.078
  },
  "oklch": {
    "l": 0.62013,
    "c": 0.08821,
    "h": 256.6
  },
  "luminance": 0.23849
}

Semantic roles & 50–950 ramp

primary

#6388BB

secondary

#CFC0AB

accent

#9D59CF

background

#F9FAFC

surface

#F2F4F9

border

#CCCED2

text

#0D1014

muted

#7E7F82

Preview Lab

Preview with #6388BB

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

Preview Lab → · Contrast checker → · Palette generator →