#3959D9#3959D9
#3959D9 is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.9% C 0.199 H 267.9°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).
Color values
| HEX | #3959D9 |
|---|---|
| RGB | rgb(57, 89, 217) |
| HSL | hsl(228, 68%, 54%) |
| HSV | hsv(228, 74%, 85%) |
| CMYK | cmyk(73.7%, 59%, 0%, 14.9%) |
| CIE-LAB | lab(42.80, 32.52, -68.91) |
| CIE-LCH | lch(42.80, 76.20, 295.26°) |
| OKLab | oklab(51.93% -0.0072 -0.199) |
| OKLCH | oklch(51.93% 0.199 267.9) |
| XYZ | xyz(17.7798, 13.0225, 67.2087) |
| Luminance | 0.1302 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Warm Blue
#4B57DB
ΔE00 2.45
Azul
#1D5DEC
ΔE00 2.90
Electric Blue
#0652FF
ΔE00 4.51
Royal Blue
#4169E1
ΔE00 5.41
Bright Blue
#0165FC
ΔE00 5.98
Sapphire
#0F52BA
ΔE00 6.16
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3959D9 #D9B939
analogous
#39A9D9 #3959D9 #6939D9
triadic
#3959D9 #D93959 #59D939
tetradic
#3959D9 #D939A9 #D9B939 #39D969
square
#3959D9 #D939A9 #D9B939 #39D969
split-complementary
#3959D9 #D96939 #A9D939
monochromatic
#182D7F #223FB3 #3959D9 #6C84E3 #A0AFED
Accessibility & contrast
On white
5.83
#3959D9 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.60
#3959D9 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #3959D9
5.83:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3959D9 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3959D9 | 1.00 | 5.83 | 3.60 | 5.83 |
| #FFFFFF | 5.83 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.60 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.83 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#006DDD
Deuteranopia (green-blind)
#005ED7
Tritanopia (blue-blind)
#007990
Achromatopsia (no color)
#656565
Design tokens & code
CSS
--color: #3959d9; /* rgb */ color: rgb(57, 89, 217); /* oklch */ color: oklch(51.9% 0.199 267.9);
Tailwind
colors: {
custom: {
50: '#8587e6',
500: '#3959d9',
950: '#000000',
},
}SCSS
$custom: #3959d9; $custom-light: #8587e6; $custom-dark: #000000;
JSON
{
"hex": "#3959d9",
"rgb": {
"r": 57,
"g": 89,
"b": 217
},
"hsl": {
"h": 228,
"s": 67.797,
"l": 53.725
},
"oklch": {
"l": 0.51927,
"c": 0.1991,
"h": 267.9
},
"luminance": 0.13024
}Semantic roles & 50–950 ramp
primary
#3959D9
secondary
#D9CB95
accent
#C83DEB
background
#F9F8FE
surface
#F1EFFC
border
#CBCAD5
text
#0D0B16
muted
#7E7C84