#1D4DA1#1D4DA1
#1D4DA1 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 43.9% C 0.146 H 260.7°. Best body text is #FFFFFF at 7.99:1 contrast (WCAG AA passes).
Color values
| HEX | #1D4DA1 |
|---|---|
| RGB | rgb(29, 77, 161) |
| HSL | hsl(218, 69%, 37%) |
| HSV | hsv(218, 82%, 63%) |
| CMYK | cmyk(82%, 52.2%, 0%, 36.9%) |
| CIE-LAB | lab(34.27, 16.08, -50.03) |
| CIE-LCH | lch(34.27, 52.55, 287.82°) |
| OKLab | oklab(43.88% -0.0235 -0.1441) |
| OKLCH | oklch(43.88% 0.146 260.7) |
| XYZ | xyz(9.5913, 8.1410, 34.7772) |
| Luminance | 0.0814 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt
#0047AB
ΔE00 2.44
Cobalt (survey)
#1E488F
ΔE00 2.70
Sapphire
#0F52BA
ΔE00 3.39
Dusk Blue
#26538D
ΔE00 3.55
Light Navy
#155084
ΔE00 5.08
Denim Blue
#3B5B92
ΔE00 5.31
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1D4DA1 #A1711D
analogous
#1D8FA1 #1D4DA1 #2F1DA1
triadic
#1D4DA1 #A11D4D #4DA11D
tetradic
#1D4DA1 #A11D8F #A1711D #1DA12F
square
#1D4DA1 #A11D8F #A1711D #1DA12F
split-complementary
#1D4DA1 #A12F1D #8FA11D
monochromatic
#0A1B39 #14346D #1D4DA1 #2666D5 #5889E1
Accessibility & contrast
On white
7.99
#1D4DA1 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.63
#1D4DA1 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1D4DA1
7.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1D4DA1 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1D4DA1 | 1.00 | 7.99 | 2.63 | 7.99 |
| #FFFFFF | 7.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.63 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#1457A4
Deuteranopia (green-blind)
#004B9F
Tritanopia (blue-blind)
#00616F
Achromatopsia (no color)
#515151
Design tokens & code
CSS
--color: #1d4da1; /* rgb */ color: rgb(29, 77, 161); /* oklch */ color: oklch(43.9% 0.146 260.7);
Tailwind
colors: {
custom: {
50: '#707ebd',
500: '#1d4da1',
950: '#000000',
},
}SCSS
$custom: #1d4da1; $custom-light: #707ebd; $custom-dark: #000000;
JSON
{
"hex": "#1d4da1",
"rgb": {
"r": 29,
"g": 77,
"b": 161
},
"hsl": {
"h": 218.182,
"s": 69.474,
"l": 37.255
},
"oklch": {
"l": 0.43876,
"c": 0.14605,
"h": 260.7
},
"luminance": 0.08142
}Semantic roles & 50–950 ramp
primary
#1D4DA1
secondary
#C49C55
accent
#AC3CEC
background
#F7F7FB
surface
#EDEEF7
border
#C8C9D0
text
#090912
muted
#7B7B81