#3137E9#3137E9
#3137E9 is a mid, highly saturated blue. Relative luminance 0.093; OKLCH L 47.7% C 0.256 H 270.1°. Best body text is #FFFFFF at 7.36:1 contrast (WCAG AA passes).
Color values
| HEX | #3137E9 |
|---|---|
| RGB | rgb(49, 55, 233) |
| HSL | hsl(238, 81%, 55%) |
| HSV | hsv(238, 79%, 91%) |
| CMYK | cmyk(79%, 76.4%, 0%, 8.6%) |
| CIE-LAB | lab(36.49, 57.30, -88.41) |
| CIE-LCH | lch(36.49, 105.35, 302.95°) |
| OKLab | oklab(47.7% 0.0004 -0.2561) |
| OKLCH | oklch(47.7% 0.256 270.1) |
| XYZ | xyz(17.3358, 9.2665, 77.9500) |
| Luminance | 0.0927 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Vibrant Blue
#0339F8
ΔE00 1.98
Vivid Blue
#152EFF
ΔE00 2.47
Light Royal Blue
#3A2EFE
ΔE00 2.85
Blue (survey)
#0343DF
ΔE00 4.01
Blurple
#5539CC
ΔE00 4.39
Rich Blue
#021BF9
ΔE00 4.39
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3137E9 #E9E331
analogous
#3193E9 #3137E9 #8731E9
triadic
#3137E9 #E93137 #37E931
tetradic
#3137E9 #E93193 #E9E331 #31E987
square
#3137E9 #E93193 #E9E331 #31E987
split-complementary
#3137E9 #E98731 #93E931
monochromatic
#0F1490 #151BC7 #3137E9 #686DEF #A0A2F5
Accessibility & contrast
On white
7.36
#3137E9 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.85
#3137E9 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3137E9
7.36:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3137E9 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3137E9 | 1.00 | 7.36 | 2.85 | 7.36 |
| #FFFFFF | 7.36 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.85 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.36 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#005FEE
Deuteranopia (green-blind)
#004CE6
Tritanopia (blue-blind)
#006D8F
Achromatopsia (no color)
#565656
Design tokens & code
CSS
--color: #3137e9; /* rgb */ color: rgb(49, 55, 233); /* oklch */ color: oklch(47.7% 0.256 270.1);
Tailwind
colors: {
custom: {
50: '#8971f2',
500: '#3137e9',
950: '#000000',
},
}SCSS
$custom: #3137e9; $custom-light: #8971f2; $custom-dark: #000000;
JSON
{
"hex": "#3137e9",
"rgb": {
"r": 49,
"g": 55,
"b": 233
},
"hsl": {
"h": 238.043,
"s": 80.702,
"l": 55.294
},
"oklch": {
"l": 0.47697,
"c": 0.25607,
"h": 270.1
},
"luminance": 0.09269
}Semantic roles & 50–950 ramp
primary
#3137E9
secondary
#E1DF94
accent
#F131F7
background
#F9F7FF
surface
#F2EDFE
border
#CCC8D6
text
#0E0817
muted
#7E7B85