#40539D#40539D
#40539D is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.5% C 0.122 H 270.3°. Best body text is #FFFFFF at 7.14:1 contrast (WCAG AA passes).
Color values
| HEX | #40539D |
|---|---|
| RGB | rgb(64, 83, 157) |
| HSL | hsl(228, 42%, 43%) |
| HSV | hsv(228, 59%, 62%) |
| CMYK | cmyk(59.2%, 47.1%, 0%, 38.4%) |
| CIE-LAB | lab(37.32, 15.98, -42.65) |
| CIE-LCH | lch(37.32, 45.55, 290.54°) |
| OKLab | oklab(46.55% 0.0006 -0.1217) |
| OKLCH | oklch(46.55% 0.122 270.3) |
| XYZ | xyz(11.2914, 9.7099, 33.1709) |
| Luminance | 0.0971 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Denim Blue
#3B5B92
ΔE00 4.15
Dusky Blue
#475F94
ΔE00 4.50
Twilight
#4E518B
ΔE00 4.98
Dusk Blue
#26538D
ΔE00 5.51
Cobalt (survey)
#1E488F
ΔE00 5.52
Sapphire
#0F52BA
ΔE00 5.60
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#40539D #9D8A40
analogous
#40819D #40539D #5B409D
triadic
#40539D #9D4053 #539D40
tetradic
#40539D #9D4081 #9D8A40 #409D5B
square
#40539D #9D4081 #9D8A40 #409D5B
split-complementary
#40539D #9D5B40 #819D40
monochromatic
#1D2546 #2E3C72 #40539D #5D71BD #8997CF
Accessibility & contrast
On white
7.14
#40539D on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.94
#40539D on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #40539D
7.14:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##40539D | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##40539D | 1.00 | 7.14 | 2.94 | 7.14 |
| #FFFFFF | 7.14 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.94 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.14 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#305CA0
Deuteranopia (green-blind)
#23549B
Tritanopia (blue-blind)
#006470
Achromatopsia (no color)
#585858
Design tokens & code
CSS
--color: #40539d; /* rgb */ color: rgb(64, 83, 157); /* oklch */ color: oklch(46.5% 0.122 270.3);
Tailwind
colors: {
custom: {
50: '#7d83ba',
500: '#40539d',
950: '#000000',
},
}SCSS
$custom: #40539d; $custom-light: #7d83ba; $custom-dark: #000000;
JSON
{
"hex": "#40539d",
"rgb": {
"r": 64,
"g": 83,
"b": 157
},
"hsl": {
"h": 227.742,
"s": 42.081,
"l": 43.333
},
"oklch": {
"l": 0.46549,
"c": 0.12167,
"h": 270.3
},
"luminance": 0.09711
}Semantic roles & 50–950 ramp
primary
#40539D
secondary
#B9AE7F
accent
#B956D2
background
#F8F7FB
surface
#EFEEF6
border
#CAC9D0
text
#0A0A12
muted
#7C7C81