#66A1F8#66A1F8

#66A1F8 is a light, vivid blue. Relative luminance 0.351; OKLCH L 70.7% C 0.142 H 258.0°. Best body text is #000000 at 8.02:1 contrast (WCAG AA passes).

Color values

HEX	#66A1F8
RGB	rgb(102, 161, 248)
HSL	hsl(216, 91%, 69%)
HSV	hsv(216, 59%, 97%)
CMYK	cmyk(58.9%, 35.1%, 0%, 2.7%)
CIE-LAB	lab(65.82, 6.27, -49.18)
CIE-LCH	lch(65.82, 49.57, 277.27°)
OKLab	oklab(70.69% -0.0296 -0.1392)
OKLCH	oklch(70.69% 0.142 258)
XYZ	xyz(35.1617, 35.0887, 93.7086)
Luminance	0.3509 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A1F8 #F8BD66

analogous

#66EAF8 #66A1F8 #7466F8

triadic

#66A1F8 #F866A1 #A1F866

tetradic

#66A1F8 #F866EA #F8BD66 #66F874

square

#66A1F8 #F866EA #F8BD66 #66F874

split-complementary

#66A1F8 #F87466 #EAF866

monochromatic

#0A5EDA #2B7DF5 #66A1F8 #A1C5FB #DBE9FD

Accessibility & contrast

On white

2.62

#66A1F8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.02

#66A1F8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A1F8

8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A1F8	#FFFFFF	#000000	##000000
##66A1F8	1.00	2.62	8.02	8.02
#FFFFFF	2.62	1.00	21.00	21.00
#000000	8.02	21.00	1.00	1.00
##000000	8.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7CA7FC

Deuteranopia (green-blind)

#699AF6

Tritanopia (blue-blind)

#00B5C1

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #66a1f8;
/* rgb */ color: rgb(102, 161, 248);
/* oklch */ color: oklch(70.7% 0.142 258.0);

Tailwind

colors: {
  custom: {
    50: '#9cbcfb',
    500: '#66a1f8',
    950: '#000000',
  },
}

SCSS

$custom: #66a1f8;
$custom-light: #9cbcfb;
$custom-dark: #000000;

JSON

{
  "hex": "#66a1f8",
  "rgb": {
    "r": 102,
    "g": 161,
    "b": 248
  },
  "hsl": {
    "h": 215.753,
    "s": 91.25,
    "l": 68.627
  },
  "oklch": {
    "l": 0.7069,
    "c": 0.14236,
    "h": 258
  },
  "luminance": 0.35092
}

Semantic roles & 50–950 ramp

primary

#66A1F8

secondary

#F3E1C7

accent

#8900E6

background

#FAFBFF

surface

#F4F6FF

border

#CED0D7

text

#0F1117

muted

#7F8085

Preview Lab

Preview with #66A1F8

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

Preview Lab → · Contrast checker → · Palette generator →