#1C47B3#1C47B3
#1C47B3 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.1% C 0.178 H 263.9°. Best body text is #FFFFFF at 8.07:1 contrast (WCAG AA passes).
Color values
| HEX | #1C47B3 |
|---|---|
| RGB | rgb(28, 71, 179) |
| HSL | hsl(223, 73%, 41%) |
| HSV | hsv(223, 84%, 70%) |
| CMYK | cmyk(84.4%, 60.3%, 0%, 29.8%) |
| CIE-LAB | lab(34.00, 27.16, -61.23) |
| CIE-LCH | lch(34.00, 66.98, 293.93°) |
| OKLab | oklab(44.1% -0.0188 -0.1771) |
| OKLCH | oklch(44.1% 0.178 263.9) |
| XYZ | xyz(10.8659, 8.0067, 43.6118) |
| Luminance | 0.0801 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt
#0047AB
ΔE00 2.16
Blue Blue
#2242C7
ΔE00 3.65
Sapphire
#0F52BA
ΔE00 4.00
Sapphire (survey)
#2138AB
ΔE00 4.85
Cobalt (survey)
#1E488F
ΔE00 5.31
Blue (survey)
#0343DF
ΔE00 5.85
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1C47B3 #B3881C
analogous
#1C92B3 #1C47B3 #3C1CB3
triadic
#1C47B3 #B31C47 #47B31C
tetradic
#1C47B3 #B31C92 #B3881C #1CB33C
square
#1C47B3 #B31C92 #B3881C #1CB33C
split-complementary
#1C47B3 #B33C1C #92B31C
monochromatic
#0B1D49 #14327E #1C47B3 #2E60DE #6388E7
Accessibility & contrast
On white
8.07
#1C47B3 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.60
#1C47B3 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1C47B3
8.07:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1C47B3 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1C47B3 | 1.00 | 8.07 | 2.60 | 8.07 |
| #FFFFFF | 8.07 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.60 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.07 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0057B7
Deuteranopia (green-blind)
#0049B1
Tritanopia (blue-blind)
#006376
Achromatopsia (no color)
#505050
Design tokens & code
CSS
--color: #1c47b3; /* rgb */ color: rgb(28, 71, 179); /* oklch */ color: oklch(44.1% 0.178 263.9);
Tailwind
colors: {
custom: {
50: '#7579cb',
500: '#1c47b3',
950: '#000000',
},
}SCSS
$custom: #1c47b3; $custom-light: #7579cb; $custom-dark: #000000;
JSON
{
"hex": "#1c47b3",
"rgb": {
"r": 28,
"g": 71,
"b": 179
},
"hsl": {
"h": 222.914,
"s": 72.947,
"l": 40.588
},
"oklch": {
"l": 0.441,
"c": 0.17815,
"h": 263.9
},
"luminance": 0.08008
}Semantic roles & 50–950 ramp
primary
#1C47B3
secondary
#CBAD5F
accent
#BB38F0
background
#F7F7FC
surface
#EEEDF9
border
#C9C8D2
text
#0A0913
muted
#7C7B82