#4B51DC#4B51DC
#4B51DC is a mid, highly saturated blue. Relative luminance 0.125; OKLCH L 51.7% C 0.208 H 274.6°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).
Color values
| HEX | #4B51DC |
|---|---|
| RGB | rgb(75, 81, 220) |
| HSL | hsl(238, 67%, 58%) |
| HSV | hsv(238, 66%, 86%) |
| CMYK | cmyk(65.9%, 63.2%, 0%, 13.7%) |
| CIE-LAB | lab(42.07, 40.80, -71.77) |
| CIE-LCH | lch(42.07, 82.56, 299.62°) |
| OKLab | oklab(51.72% 0.0165 -0.207) |
| OKLCH | oklch(51.72% 0.208 274.6) |
| XYZ | xyz(18.7581, 12.5464, 69.1294) |
| Luminance | 0.1255 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Warm Blue
#4B57DB
ΔE00 1.82
Electric Blue
#0652FF
ΔE00 4.72
Iris
#6258C4
ΔE00 4.81
Slate Blue
#6A5ACD
ΔE00 5.36
Blue (survey)
#0343DF
ΔE00 5.45
Dark Periwinkle
#665FD1
ΔE00 5.46
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#4B51DC #DCD64B
analogous
#4B9ADC #4B51DC #8D4BDC
triadic
#4B51DC #DC4B51 #51DC4B
tetradic
#4B51DC #DC4B9A #DCD64B #4BDC8D
square
#4B51DC #DC4B9A #DCD64B #4BDC8D
split-complementary
#4B51DC #DC8D4B #9ADC4B
monochromatic
#1C2191 #262DC4 #4B51DC #7E83E6 #B1B4F0
Accessibility & contrast
On white
5.98
#4B51DC on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.51
#4B51DC on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #4B51DC
5.98:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##4B51DC | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##4B51DC | 1.00 | 5.98 | 3.51 | 5.98 |
| #FFFFFF | 5.98 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.51 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.98 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#006AE0
Deuteranopia (green-blind)
#005DD9
Tritanopia (blue-blind)
#00758F
Achromatopsia (no color)
#636363
Design tokens & code
CSS
--color: #4b51dc; /* rgb */ color: rgb(75, 81, 220); /* oklch */ color: oklch(51.7% 0.208 274.6);
Tailwind
colors: {
custom: {
50: '#8e82e8',
500: '#4b51dc',
950: '#000000',
},
}SCSS
$custom: #4b51dc; $custom-light: #8e82e8; $custom-dark: #000000;
JSON
{
"hex": "#4b51dc",
"rgb": {
"r": 75,
"g": 81,
"b": 220
},
"hsl": {
"h": 237.517,
"s": 67.442,
"l": 57.843
},
"oklch": {
"l": 0.51722,
"c": 0.20769,
"h": 274.6
},
"luminance": 0.12548
}Semantic roles & 50–950 ramp
primary
#4B51DC
secondary
#DEDCA4
accent
#E33DEA
background
#F9F8FE
surface
#F2EFFD
border
#CCCAD5
text
#0E0A16
muted
#7E7C84