#1F48AD#1F48AD
#1F48AD is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.9% C 0.168 H 263.9°. Best body text is #FFFFFF at 8.11:1 contrast (WCAG AA passes).
Color values
| HEX | #1F48AD |
|---|---|
| RGB | rgb(31, 72, 173) |
| HSL | hsl(223, 70%, 40%) |
| HSV | hsv(223, 82%, 68%) |
| CMYK | cmyk(82.1%, 58.4%, 0%, 32.2%) |
| CIE-LAB | lab(33.86, 24.40, -57.88) |
| CIE-LCH | lch(33.86, 62.81, 292.86°) |
| OKLab | oklab(43.87% -0.0177 -0.1673) |
| OKLCH | oklch(43.87% 0.168 263.9) |
| XYZ | xyz(10.4226, 7.9419, 40.5107) |
| Luminance | 0.0794 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt
#0047AB
ΔE00 1.67
Sapphire
#0F52BA
ΔE00 3.83
Cobalt (survey)
#1E488F
ΔE00 4.45
Blue Blue
#2242C7
ΔE00 4.54
Sapphire (survey)
#2138AB
ΔE00 5.24
Dusk Blue
#26538D
ΔE00 6.27
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F48AD #AD841F
analogous
#1F8FAD #1F48AD #3D1FAD
triadic
#1F48AD #AD1F48 #48AD1F
tetradic
#1F48AD #AD1F8F #AD841F #1FAD3D
square
#1F48AD #AD1F8F #AD841F #1FAD3D
split-complementary
#1F48AD #AD3D1F #8FAD1F
monochromatic
#0C1D45 #163279 #1F48AD #2F61DA #6388E3
Accessibility & contrast
On white
8.11
#1F48AD on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.59
#1F48AD on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F48AD
8.11:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F48AD | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F48AD | 1.00 | 8.11 | 2.59 | 8.11 |
| #FFFFFF | 8.11 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.59 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.11 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0056B0
Deuteranopia (green-blind)
#0049AB
Tritanopia (blue-blind)
#006273
Achromatopsia (no color)
#505050
Design tokens & code
CSS
--color: #1f48ad; /* rgb */ color: rgb(31, 72, 173); /* oklch */ color: oklch(43.9% 0.168 263.9);
Tailwind
colors: {
custom: {
50: '#747ac6',
500: '#1f48ad',
950: '#000000',
},
}SCSS
$custom: #1f48ad; $custom-light: #747ac6; $custom-dark: #000000;
JSON
{
"hex": "#1f48ad",
"rgb": {
"r": 31,
"g": 72,
"b": 173
},
"hsl": {
"h": 222.676,
"s": 69.608,
"l": 40
},
"oklch": {
"l": 0.43871,
"c": 0.16821,
"h": 263.9
},
"luminance": 0.07943
}Semantic roles & 50–950 ramp
primary
#1F48AD
secondary
#C8AA60
accent
#B93BEC
background
#F7F7FC
surface
#EEEDF8
border
#C9C8D1
text
#0A0913
muted
#7C7B82