#3137B6#3137B6
#3137B6 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.4% C 0.195 H 272.4°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).
Color values
| HEX | #3137B6 |
|---|---|
| RGB | rgb(49, 55, 182) |
| HSL | hsl(237, 58%, 45%) |
| HSV | hsv(237, 73%, 71%) |
| CMYK | cmyk(73.1%, 69.8%, 0%, 28.6%) |
| CIE-LAB | lab(31.26, 40.51, -67.46) |
| CIE-LCH | lch(31.26, 78.69, 300.98°) |
| OKLab | oklab(42.42% 0.0082 -0.1951) |
| OKLCH | oklch(42.42% 0.195 272.4) |
| XYZ | xyz(11.0735, 6.7616, 44.9684) |
| Luminance | 0.0676 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.49
Blue Blue
#2242C7
ΔE00 3.98
Ocean Blue
#4F42B5
ΔE00 4.48
Blue With A Hint Of Purple
#533CC6
ΔE00 5.01
Blurple
#5539CC
ΔE00 5.59
Blue (survey)
#0343DF
ΔE00 6.20
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3137B6 #B6B031
analogous
#317AB6 #3137B6 #6D31B6
triadic
#3137B6 #B63137 #37B631
tetradic
#3137B6 #B6317A #B6B031 #31B66D
square
#3137B6 #B6317A #B6B031 #31B66D
split-complementary
#3137B6 #B66D31 #7AB631
monochromatic
#171A56 #242886 #3137B6 #5359D1 #8488DE
Accessibility & contrast
On white
8.93
#3137B6 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.35
#3137B6 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3137B6
8.93:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3137B6 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3137B6 | 1.00 | 8.93 | 2.35 | 8.93 |
| #FFFFFF | 8.93 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.35 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.93 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0050BA
Deuteranopia (green-blind)
#0043B4
Tritanopia (blue-blind)
#005A72
Achromatopsia (no color)
#4A4A4A
Design tokens & code
CSS
--color: #3137b6; /* rgb */ color: rgb(49, 55, 182); /* oklch */ color: oklch(42.4% 0.195 272.4);
Tailwind
colors: {
custom: {
50: '#7d6ecd',
500: '#3137b6',
950: '#000000',
},
}SCSS
$custom: #3137b6; $custom-light: #7d6ecd; $custom-dark: #000000;
JSON
{
"hex": "#3137b6",
"rgb": {
"r": 49,
"g": 55,
"b": 182
},
"hsl": {
"h": 237.293,
"s": 57.576,
"l": 45.294
},
"oklch": {
"l": 0.42418,
"c": 0.1953,
"h": 272.4
},
"luminance": 0.06763
}Semantic roles & 50–950 ramp
primary
#3137B6
secondary
#C7C47C
accent
#DA47E1
background
#F8F6FC
surface
#EFECF9
border
#CAC7D2
text
#0B0714
muted
#7C7A82