#4040FF#4040FF
#4040FF is a mid, highly saturated blue. Relative luminance 0.120; OKLCH L 51.9% C 0.269 H 271.9°. Best body text is #FFFFFF at 6.18:1 contrast (WCAG AA passes).
Color values
| HEX | #4040FF |
|---|---|
| RGB | rgb(64, 64, 255) |
| HSL | hsl(240, 100%, 63%) |
| HSV | hsv(240, 75%, 100%) |
| CMYK | cmyk(74.9%, 74.9%, 0%, 0%) |
| CIE-LAB | lab(41.18, 60.51, -93.03) |
| CIE-LCH | lch(41.18, 110.98, 303.04°) |
| OKLab | oklab(51.88% 0.0091 -0.2693) |
| OKLCH | oklch(51.88% 0.269 271.9) |
| XYZ | xyz(21.9917, 11.9744, 95.7406) |
| Luminance | 0.1198 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Purpleish Blue
#6140EF
ΔE00 3.31
Light Royal Blue
#3A2EFE
ΔE00 3.53
Vibrant Blue
#0339F8
ΔE00 3.58
Vivid Blue
#152EFF
ΔE00 4.26
Purpley Blue
#5F34E7
ΔE00 4.62
Electric Blue
#0652FF
ΔE00 5.33
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#4040FF #FFFF40
analogous
#409FFF #4040FF #9F40FF
triadic
#4040FF #FF4040 #40FF40
tetradic
#4040FF #FF409F #FFFF40 #40FF9F
square
#4040FF #FF409F #FFFF40 #40FF9F
split-complementary
#4040FF #FF9F40 #9FFF40
monochromatic
#0000C5 #0303FF #4040FF #7D7DFF #BABAFF
Accessibility & contrast
On white
6.18
#4040FF on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.40
#4040FF on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #4040FF
6.18:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##4040FF | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##4040FF | 1.00 | 6.18 | 3.40 | 6.18 |
| #FFFFFF | 6.18 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.40 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 6.18 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#006AFF
Deuteranopia (green-blind)
#0057FC
Tritanopia (blue-blind)
#00799E
Achromatopsia (no color)
#616161
Design tokens & code
CSS
--color: #4040ff; /* rgb */ color: rgb(64, 64, 255); /* oklch */ color: oklch(51.9% 0.269 271.9);
Tailwind
colors: {
custom: {
50: '#9278ff',
500: '#4040ff',
950: '#000000',
},
}SCSS
$custom: #4040ff; $custom-light: #9278ff; $custom-dark: #000000;
JSON
{
"hex": "#4040ff",
"rgb": {
"r": 64,
"g": 64,
"b": 255
},
"hsl": {
"h": 240,
"s": 100,
"l": 62.549
},
"oklch": {
"l": 0.5188,
"c": 0.26944,
"h": 271.9
},
"luminance": 0.11977
}Semantic roles & 50–950 ramp
primary
#4040FF
secondary
#F0F0AB
accent
#E600E5
background
#FAF7FF
surface
#F4EDFF
border
#CEC8D7
text
#0F0918
muted
#7F7B86