#64B9EC#64B9EC

#64B9EC is a light, moderate cyan. Relative luminance 0.435; OKLCH L 75.3% C 0.111 H 237.1°. Best body text is #000000 at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#64B9EC
RGB	rgb(100, 185, 236)
HSL	hsl(203, 78%, 66%)
HSV	hsv(203, 58%, 93%)
CMYK	cmyk(57.6%, 21.6%, 0%, 7.5%)
CIE-LAB	lab(71.87, -11.24, -33.19)
CIE-LCH	lch(71.87, 35.04, 251.30°)
OKLab	oklab(75.25% -0.0601 -0.0928)
OKLCH	oklch(75.25% 0.111 237.1)
XYZ	xyz(37.7391, 43.4599, 85.7404)
Luminance	0.4346 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64B9EC #EC9764

analogous

#64ECDB #64B9EC #6475EC

triadic

#64B9EC #EC64B9 #B9EC64

tetradic

#64B9EC #DB64EC #EC9764 #75EC64

square

#64B9EC #DB64EC #EC9764 #75EC64

split-complementary

#64B9EC #EC6475 #ECDB64

monochromatic

#1780BE #2DA0E5 #64B9EC #9BD2F3 #D1EAF9

Accessibility & contrast

On white

2.17

#64B9EC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.69

#64B9EC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #64B9EC

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64B9EC	#FFFFFF	#000000	##000000
##64B9EC	1.00	2.17	9.69	9.69
#FFFFFF	2.17	1.00	21.00	21.00
#000000	9.69	21.00	1.00	1.00
##000000	9.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1B8EE

Deuteranopia (green-blind)

#8FAAEB

Tritanopia (blue-blind)

#00C6CA

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #64b9ec;
/* rgb */ color: rgb(100, 185, 236);
/* oklch */ color: oklch(75.3% 0.111 237.1);

Tailwind

colors: {
  custom: {
    50: '#9acef2',
    500: '#64b9ec',
    950: '#000000',
  },
}

SCSS

$custom: #64b9ec;
$custom-light: #9acef2;
$custom-dark: #000000;

JSON

{
  "hex": "#64b9ec",
  "rgb": {
    "r": 100,
    "g": 185,
    "b": 236
  },
  "hsl": {
    "h": 202.5,
    "s": 78.161,
    "l": 65.882
  },
  "oklch": {
    "l": 0.75252,
    "c": 0.11059,
    "h": 237.1
  },
  "luminance": 0.43463
}

Semantic roles & 50–950 ramp

primary

#64B9EC

secondary

#ECD0BF

accent

#590BDA

background

#FAFCFE

surface

#F3F9FD

border

#CDD2D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #64B9EC

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

Preview Lab → · Contrast checker → · Palette generator →