#3138BF#3138BF
#3138BF is a dark, highly saturated blue. Relative luminance 0.072; OKLCH L 43.5% C 0.205 H 271.8°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).
Color values
| HEX | #3138BF |
|---|---|
| RGB | rgb(49, 56, 191) |
| HSL | hsl(237, 59%, 47%) |
| HSV | hsv(237, 74%, 75%) |
| CMYK | cmyk(74.3%, 70.7%, 0%, 25.1%) |
| CIE-LAB | lab(32.35, 42.99, -70.98) |
| CIE-LCH | lch(32.35, 82.98, 301.20°) |
| OKLab | oklab(43.47% 0.0065 -0.2054) |
| OKLCH | oklch(43.47% 0.206 271.8) |
| XYZ | xyz(12.0816, 7.2416, 50.0412) |
| Luminance | 0.0724 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Blue Blue
#2242C7
ΔE00 3.31
Sapphire (survey)
#2138AB
ΔE00 3.43
Blue With A Hint Of Purple
#533CC6
ΔE00 4.33
Ocean Blue
#4F42B5
ΔE00 4.35
Blurple
#5539CC
ΔE00 4.81
Blue (survey)
#0343DF
ΔE00 5.16
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3138BF #BFB831
analogous
#317FBF #3138BF #7131BF
triadic
#3138BF #BF3138 #38BF31
tetradic
#3138BF #BF317F #BFB831 #31BF71
square
#3138BF #BF317F #BFB831 #31BF71
split-complementary
#3138BF #BF7131 #7FBF31
monochromatic
#181B5E #252A8E #3138BF #595FD4 #8A8EE1
Accessibility & contrast
On white
8.58
#3138BF on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.45
#3138BF on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3138BF
8.58:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3138BF | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3138BF | 1.00 | 8.58 | 2.45 | 8.58 |
| #FFFFFF | 8.58 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.45 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.58 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0053C3
Deuteranopia (green-blind)
#0045BD
Tritanopia (blue-blind)
#005E77
Achromatopsia (no color)
#4C4C4C
Design tokens & code
CSS
--color: #3138bf; /* rgb */ color: rgb(49, 56, 191); /* oklch */ color: oklch(43.5% 0.205 271.8);
Tailwind
colors: {
custom: {
50: '#7f6fd4',
500: '#3138bf',
950: '#000000',
},
}SCSS
$custom: #3138bf; $custom-light: #7f6fd4; $custom-dark: #000000;
JSON
{
"hex": "#3138bf",
"rgb": {
"r": 49,
"g": 56,
"b": 191
},
"hsl": {
"h": 237.042,
"s": 59.167,
"l": 47.059
},
"oklch": {
"l": 0.43468,
"c": 0.2055,
"h": 271.8
},
"luminance": 0.07243
}Semantic roles & 50–950 ramp
primary
#3138BF
secondary
#CBC781
accent
#DB45E2
background
#F8F6FD
surface
#F0ECFA
border
#CBC7D3
text
#0C0714
muted
#7D7A83