#1C48AB#1C48AB
#1C48AB is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.6% C 0.166 H 263.2°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).
Color values
| HEX | #1C48AB |
|---|---|
| RGB | rgb(28, 72, 171) |
| HSL | hsl(222, 72%, 39%) |
| HSV | hsv(222, 84%, 67%) |
| CMYK | cmyk(83.6%, 57.9%, 0%, 32.9%) |
| CIE-LAB | lab(33.61, 23.35, -57.11) |
| CIE-LCH | lch(33.61, 61.70, 292.24°) |
| OKLab | oklab(43.6% -0.0198 -0.165) |
| OKLCH | oklch(43.6% 0.166 263.2) |
| XYZ | xyz(10.1443, 7.8206, 39.4951) |
| Luminance | 0.0782 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt
#0047AB
ΔE00 1.29
Sapphire
#0F52BA
ΔE00 3.79
Cobalt (survey)
#1E488F
ΔE00 4.06
Blue Blue
#2242C7
ΔE00 4.94
Sapphire (survey)
#2138AB
ΔE00 5.43
Dusk Blue
#26538D
ΔE00 5.95
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1C48AB #AB7F1C
analogous
#1C90AB #1C48AB #371CAB
triadic
#1C48AB #AB1C48 #48AB1C
tetradic
#1C48AB #AB1C90 #AB7F1C #1CAB37
square
#1C48AB #AB1C90 #AB7F1C #1CAB37
split-complementary
#1C48AB #AB371C #90AB1C
monochromatic
#0B1C42 #133276 #1C48AB #2860DC #5D87E4
Accessibility & contrast
On white
8.19
#1C48AB on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.56
#1C48AB on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1C48AB
8.19:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1C48AB | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1C48AB | 1.00 | 8.19 | 2.56 | 8.19 |
| #FFFFFF | 8.19 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.56 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.19 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0056AE
Deuteranopia (green-blind)
#0049A9
Tritanopia (blue-blind)
#006172
Achromatopsia (no color)
#4F4F4F
Design tokens & code
CSS
--color: #1c48ab; /* rgb */ color: rgb(28, 72, 171); /* oklch */ color: oklch(43.6% 0.166 263.2);
Tailwind
colors: {
custom: {
50: '#727ac5',
500: '#1c48ab',
950: '#000000',
},
}SCSS
$custom: #1c48ab; $custom-light: #727ac5; $custom-dark: #000000;
JSON
{
"hex": "#1c48ab",
"rgb": {
"r": 28,
"g": 72,
"b": 171
},
"hsl": {
"h": 221.538,
"s": 71.859,
"l": 39.02
},
"oklch": {
"l": 0.43602,
"c": 0.16623,
"h": 263.2
},
"luminance": 0.07822
}Semantic roles & 50–950 ramp
primary
#1C48AB
secondary
#C9A75A
accent
#B739EF
background
#F7F7FC
surface
#EEEDF8
border
#C9C8D1
text
#090913
muted
#7B7B82