#3645B4#3645B4
#3645B4 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.9% C 0.175 H 271.5°. Best body text is #FFFFFF at 7.87:1 contrast (WCAG AA passes).
Color values
| HEX | #3645B4 |
|---|---|
| RGB | rgb(54, 69, 180) |
| HSL | hsl(233, 54%, 46%) |
| HSV | hsv(233, 70%, 71%) |
| CMYK | cmyk(70%, 61.7%, 0%, 29.4%) |
| CIE-LAB | lab(34.67, 31.62, -60.67) |
| CIE-LCH | lch(34.67, 68.42, 297.53°) |
| OKLab | oklab(44.93% 0.0045 -0.1751) |
| OKLCH | oklch(44.93% 0.175 271.5) |
| XYZ | xyz(11.8849, 8.3346, 44.1536) |
| Luminance | 0.0834 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Blue Blue
#2242C7
ΔE00 2.78
Ocean Blue
#4F42B5
ΔE00 4.00
Sapphire (survey)
#2138AB
ΔE00 4.10
Cobalt
#0047AB
ΔE00 4.97
Blueberry
#464196
ΔE00 5.36
Blue (survey)
#0343DF
ΔE00 5.38
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3645B4 #B4A536
analogous
#3684B4 #3645B4 #6636B4
triadic
#3645B4 #B43645 #45B436
tetradic
#3645B4 #B43684 #B4A536 #36B466
square
#3645B4 #B43684 #B4A536 #36B466
split-complementary
#3645B4 #B46636 #84B436
monochromatic
#1A2156 #283385 #3645B4 #5A68CD #8993DC
Accessibility & contrast
On white
7.87
#3645B4 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.67
#3645B4 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3645B4
7.87:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3645B4 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3645B4 | 1.00 | 7.87 | 2.67 | 7.87 |
| #FFFFFF | 7.87 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.67 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.87 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0057B8
Deuteranopia (green-blind)
#004CB2
Tritanopia (blue-blind)
#006176
Achromatopsia (no color)
#525252
Design tokens & code
CSS
--color: #3645b4; /* rgb */ color: rgb(54, 69, 180); /* oklch */ color: oklch(44.9% 0.175 271.5);
Tailwind
colors: {
custom: {
50: '#7e78cb',
500: '#3645b4',
950: '#000000',
},
}SCSS
$custom: #3645b4; $custom-light: #7e78cb; $custom-dark: #000000;
JSON
{
"hex": "#3645b4",
"rgb": {
"r": 54,
"g": 69,
"b": 180
},
"hsl": {
"h": 232.857,
"s": 53.846,
"l": 45.882
},
"oklch": {
"l": 0.44931,
"c": 0.17513,
"h": 271.5
},
"luminance": 0.08336
}Semantic roles & 50–950 ramp
primary
#3645B4
secondary
#C6BD80
accent
#CC4BDD
background
#F8F7FC
surface
#EFEDF9
border
#CAC8D2
text
#0B0913
muted
#7C7B82