#3F57D2#3F57D2
#3F57D2 is a mid, vivid blue. Relative luminance 0.125; OKLCH L 51.3% C 0.191 H 269.9°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).
Color values
| HEX | #3F57D2 |
|---|---|
| RGB | rgb(63, 87, 210) |
| HSL | hsl(230, 62%, 54%) |
| HSV | hsv(230, 70%, 82%) |
| CMYK | cmyk(70%, 58.6%, 0%, 17.6%) |
| CIE-LAB | lab(42.04, 32.03, -66.13) |
| CIE-LCH | lch(42.04, 73.48, 295.84°) |
| OKLab | oklab(51.27% -0.0003 -0.1907) |
| OKLCH | oklch(51.27% 0.191 269.9) |
| XYZ | xyz(17.0870, 12.5246, 62.4773) |
| Luminance | 0.1253 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Warm Blue
#4B57DB
ΔE00 2.17
Azul
#1D5DEC
ΔE00 4.11
Electric Blue
#0652FF
ΔE00 5.18
Iris
#6258C4
ΔE00 5.52
Sapphire
#0F52BA
ΔE00 5.92
Dark Periwinkle
#665FD1
ΔE00 5.96
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3F57D2 #D2BA3F
analogous
#3FA0D2 #3F57D2 #703FD2
triadic
#3F57D2 #D23F57 #57D23F
tetradic
#3F57D2 #D23FA0 #D2BA3F #3FD270
square
#3F57D2 #D23FA0 #D2BA3F #3FD270
split-complementary
#3F57D2 #D2703F #A0D23F
monochromatic
#1D2C7A #283EAC #3F57D2 #7182DE #A2AEE9
Accessibility & contrast
On white
5.99
#3F57D2 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.51
#3F57D2 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #3F57D2
5.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3F57D2 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3F57D2 | 1.00 | 5.99 | 3.51 | 5.99 |
| #FFFFFF | 5.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.51 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#006AD6
Deuteranopia (green-blind)
#005DD0
Tritanopia (blue-blind)
#00768C
Achromatopsia (no color)
#636363
Design tokens & code
CSS
--color: #3f57d2; /* rgb */ color: rgb(63, 87, 210); /* oklch */ color: oklch(51.3% 0.191 269.9);
Tailwind
colors: {
custom: {
50: '#8686e1',
500: '#3f57d2',
950: '#000000',
},
}SCSS
$custom: #3f57d2; $custom-light: #8686e1; $custom-dark: #000000;
JSON
{
"hex": "#3f57d2",
"rgb": {
"r": 63,
"g": 87,
"b": 210
},
"hsl": {
"h": 230.204,
"s": 62.025,
"l": 53.529
},
"oklch": {
"l": 0.51269,
"c": 0.19069,
"h": 269.9
},
"luminance": 0.12526
}Semantic roles & 50–950 ramp
primary
#3F57D2
secondary
#D6CC97
accent
#CB43E5
background
#F9F8FD
surface
#F1EFFB
border
#CBCAD4
text
#0D0B15
muted
#7E7C83