#40639F#40639F
#40639F is a mid, moderate blue. Relative luminance 0.125; OKLCH L 50.2% C 0.104 H 260.6°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).
Color values
| HEX | #40639F |
|---|---|
| RGB | rgb(64, 99, 159) |
| HSL | hsl(218, 43%, 44%) |
| HSV | hsv(218, 60%, 62%) |
| CMYK | cmyk(59.7%, 37.7%, 0%, 37.6%) |
| CIE-LAB | lab(42.02, 6.40, -36.35) |
| CIE-LCH | lch(42.02, 36.91, 279.98°) |
| OKLab | oklab(50.21% -0.0171 -0.103) |
| OKLCH | oklch(50.21% 0.104 260.6) |
| XYZ | xyz(12.8320, 12.5158, 34.5337) |
| Luminance | 0.1252 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Dusky Blue
#475F94
ΔE00 2.84
Denim Blue
#3B5B92
ΔE00 3.08
French Blue
#436BAD
ΔE00 3.23
Denim (survey)
#3B638C
ΔE00 3.56
Denim
#1560BD
ΔE00 4.46
Mid Blue
#276AB3
ΔE00 4.90
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#40639F #9F7C40
analogous
#40929F #40639F #4C409F
triadic
#40639F #9F4063 #639F40
tetradic
#40639F #9F4092 #9F7C40 #409F4C
square
#40639F #9F4092 #9F7C40 #409F4C
split-complementary
#40639F #9F4C40 #929F40
monochromatic
#1D2D48 #2E4873 #40639F #5E81BE #8AA3D0
Accessibility & contrast
On white
5.99
#40639F on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.50
#40639F on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #40639F
5.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##40639F | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##40639F | 1.00 | 5.99 | 3.50 | 5.99 |
| #FFFFFF | 5.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.50 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#4A68A1
Deuteranopia (green-blind)
#3D5F9E
Tritanopia (blue-blind)
#007079
Achromatopsia (no color)
#636363
Design tokens & code
CSS
--color: #40639f; /* rgb */ color: rgb(64, 99, 159); /* oklch */ color: oklch(50.2% 0.104 260.6);
Tailwind
colors: {
custom: {
50: '#7d8fbb',
500: '#40639f',
950: '#000000',
},
}SCSS
$custom: #40639f; $custom-light: #7d8fbb; $custom-dark: #000000;
JSON
{
"hex": "#40639f",
"rgb": {
"r": 64,
"g": 99,
"b": 159
},
"hsl": {
"h": 217.895,
"s": 42.601,
"l": 43.725
},
"oklch": {
"l": 0.5021,
"c": 0.10443,
"h": 260.6
},
"luminance": 0.12517
}Semantic roles & 50–950 ramp
primary
#40639F
secondary
#BBA580
accent
#A455D2
background
#F7F8FB
surface
#EEF0F6
border
#C9CBD0
text
#0A0C12
muted
#7C7D81