#1648B4#1648B4
#1648B4 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.2% C 0.179 H 262.7°. Best body text is #FFFFFF at 8.01:1 contrast (WCAG AA passes).
Color values
| HEX | #1648B4 |
|---|---|
| RGB | rgb(22, 72, 180) |
| HSL | hsl(221, 78%, 40%) |
| HSV | hsv(221, 88%, 71%) |
| CMYK | cmyk(87.8%, 60%, 0%, 29.4%) |
| CIE-LAB | lab(34.19, 26.47, -61.51) |
| CIE-LCH | lch(34.19, 66.96, 293.28°) |
| OKLab | oklab(44.22% -0.0227 -0.1781) |
| OKLCH | oklch(44.22% 0.18 262.7) |
| XYZ | xyz(10.8835, 8.0992, 44.1608) |
| Luminance | 0.0810 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt
#0047AB
ΔE00 1.84
Sapphire
#0F52BA
ΔE00 3.51
Blue Blue
#2242C7
ΔE00 3.97
Cobalt (survey)
#1E488F
ΔE00 5.17
Sapphire (survey)
#2138AB
ΔE00 5.34
Blue (survey)
#0343DF
ΔE00 5.95
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1648B4 #B48216
analogous
#1697B4 #1648B4 #3316B4
triadic
#1648B4 #B41648 #48B416
tetradic
#1648B4 #B41697 #B48216 #16B433
square
#1648B4 #B41697 #B48216 #16B433
split-complementary
#1648B4 #B43316 #97B416
monochromatic
#091C47 #0F327D #1648B4 #2360E4 #5A88EB
Accessibility & contrast
On white
8.01
#1648B4 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.62
#1648B4 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1648B4
8.01:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1648B4 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1648B4 | 1.00 | 8.01 | 2.62 | 8.01 |
| #FFFFFF | 8.01 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.62 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.01 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0058B8
Deuteranopia (green-blind)
#0049B2
Tritanopia (blue-blind)
#006477
Achromatopsia (no color)
#505050
Design tokens & code
CSS
--color: #1648b4; /* rgb */ color: rgb(22, 72, 180); /* oklch */ color: oklch(44.2% 0.179 262.7);
Tailwind
colors: {
custom: {
50: '#737acb',
500: '#1648b4',
950: '#000000',
},
}SCSS
$custom: #1648b4; $custom-light: #737acb; $custom-dark: #000000;
JSON
{
"hex": "#1648b4",
"rgb": {
"r": 22,
"g": 72,
"b": 180
},
"hsl": {
"h": 221.013,
"s": 78.218,
"l": 39.608
},
"oklch": {
"l": 0.44225,
"c": 0.1795,
"h": 262.7
},
"luminance": 0.08101
}Semantic roles & 50–950 ramp
primary
#1648B4
secondary
#CEA958
accent
#B733F5
background
#F7F7FC
surface
#EEEDF9
border
#C9C8D2
text
#0A0913
muted
#7C7B82