#3B5BCC#3B5BCC
#3B5BCC is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.4% C 0.179 H 267.7°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).
Color values
| HEX | #3B5BCC |
|---|---|
| RGB | rgb(59, 91, 204) |
| HSL | hsl(227, 59%, 52%) |
| HSV | hsv(227, 71%, 80%) |
| CMYK | cmyk(71.1%, 55.4%, 0%, 20%) |
| CIE-LAB | lab(42.41, 26.80, -62.07) |
| CIE-LCH | lch(42.41, 67.61, 293.35°) |
| OKLab | oklab(51.36% -0.0073 -0.1788) |
| OKLCH | oklch(51.36% 0.179 267.7) |
| XYZ | xyz(16.4400, 12.7699, 58.7135) |
| Luminance | 0.1277 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Warm Blue
#4B57DB
ΔE00 3.75
Azul
#1D5DEC
ΔE00 3.91
Sapphire
#0F52BA
ΔE00 5.13
Royal Blue
#4169E1
ΔE00 5.42
Denim
#1560BD
ΔE00 5.71
Electric Blue
#0652FF
ΔE00 6.23
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3B5BCC #CCAC3B
analogous
#3BA3CC #3B5BCC #643BCC
triadic
#3B5BCC #CC3B5B #5BCC3B
tetradic
#3B5BCC #CC3BA3 #CCAC3B #3BCC64
square
#3B5BCC #CC3BA3 #CCAC3B #3BCC64
split-complementary
#3B5BCC #CC643B #A3CC3B
monochromatic
#1D2F70 #2A44A0 #3B5BCC #6C84D9 #9CACE5
Accessibility & contrast
On white
5.91
#3B5BCC on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.55
#3B5BCC on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #3B5BCC
5.91:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3B5BCC | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3B5BCC | 1.00 | 5.91 | 3.55 | 5.91 |
| #FFFFFF | 5.91 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.55 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.91 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#006BD0
Deuteranopia (green-blind)
#005ECA
Tritanopia (blue-blind)
#00778A
Achromatopsia (no color)
#646464
Design tokens & code
CSS
--color: #3b5bcc; /* rgb */ color: rgb(59, 91, 204); /* oklch */ color: oklch(51.4% 0.179 267.7);
Tailwind
colors: {
custom: {
50: '#8389dc',
500: '#3b5bcc',
950: '#000000',
},
}SCSS
$custom: #3b5bcc; $custom-light: #8389dc; $custom-dark: #000000;
JSON
{
"hex": "#3b5bcc",
"rgb": {
"r": 59,
"g": 91,
"b": 204
},
"hsl": {
"h": 226.759,
"s": 58.704,
"l": 51.569
},
"oklch": {
"l": 0.51356,
"c": 0.17895,
"h": 267.7
},
"luminance": 0.12772
}Semantic roles & 50–950 ramp
primary
#3B5BCC
secondary
#D1C392
accent
#BF46E2
background
#F8F8FD
surface
#F0EFFB
border
#CBCAD4
text
#0C0B15
muted
#7D7C83