#647FA3#647FA3
#647FA3 is a mid, moderate cyan. Relative luminance 0.205; OKLCH L 59.0% C 0.064 H 255.8°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).
Color values
| HEX | #647FA3 |
|---|---|
| RGB | rgb(100, 127, 163) |
| HSL | hsl(214, 26%, 52%) |
| HSV | hsv(214, 39%, 64%) |
| CMYK | cmyk(38.7%, 22.1%, 0%, 36.1%) |
| CIE-LAB | lab(52.43, -0.31, -22.30) |
| CIE-LCH | lch(52.43, 22.31, 269.21°) |
| OKLab | oklab(58.96% -0.0157 -0.0618) |
| OKLCH | oklch(58.96% 0.064 255.8) |
| XYZ | xyz(19.4537, 20.5314, 37.5811) |
| Luminance | 0.2053 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Slate Blue (survey)
#5B7C99
ΔE00 3.96
Steel Blue (survey)
#5A7D9A
ΔE00 4.30
Greyish Blue
#5E819D
ΔE00 4.43
Off Blue
#5684AE
ΔE00 4.50
Dusty Blue
#5A86AD
ΔE00 4.57
Stormy Blue
#507B9C
ΔE00 5.42
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#647FA3 #A38864
analogous
#649FA3 #647FA3 #6964A3
triadic
#647FA3 #A3647F #7FA364
tetradic
#647FA3 #A3649F #A38864 #64A369
square
#647FA3 #A3649F #A38864 #64A369
split-complementary
#647FA3 #A36964 #9FA364
monochromatic
#344458 #4B617F #647FA3 #8A9FBA #B1BED1
Accessibility & contrast
On white
4.11
#647FA3 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.11
#647FA3 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #647FA3
5.11:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##647FA3 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##647FA3 | 1.00 | 4.11 | 5.11 | 5.11 |
| #FFFFFF | 4.11 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.11 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.11 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#7281A5
Deuteranopia (green-blind)
#6B7AA2
Tritanopia (blue-blind)
#4F878B
Achromatopsia (no color)
#7D7D7D
Design tokens & code
CSS
--color: #647fa3; /* rgb */ color: rgb(100, 127, 163); /* oklch */ color: oklch(59.0% 0.064 255.8);
Tailwind
colors: {
custom: {
50: '#92a4be',
500: '#647fa3',
950: '#000000',
},
}SCSS
$custom: #647fa3; $custom-light: #92a4be; $custom-dark: #000000;
JSON
{
"hex": "#647fa3",
"rgb": {
"r": 100,
"g": 127,
"b": 163
},
"hsl": {
"h": 214.286,
"s": 25.506,
"l": 51.569
},
"oklch": {
"l": 0.58955,
"c": 0.06375,
"h": 255.8
},
"luminance": 0.20532
}Semantic roles & 50–950 ramp
primary
#647FA3
secondary
#BFB3A4
accent
#9A66C2
background
#F9FAFB
surface
#F1F3F6
border
#CBCDD0
text
#0D0F12
muted
#7E7F81