#1B5284#1B5284
#1B5284 is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.9% C 0.101 H 249.7°. Best body text is #FFFFFF at 8.12:1 contrast (WCAG AA passes).
Color values
| HEX | #1B5284 |
|---|---|
| RGB | rgb(27, 82, 132) |
| HSL | hsl(209, 66%, 31%) |
| HSV | hsv(209, 80%, 52%) |
| CMYK | cmyk(79.5%, 37.9%, 0%, 48.2%) |
| CIE-LAB | lab(33.84, 0.88, -33.10) |
| CIE-LCH | lch(33.84, 33.11, 271.52°) |
| OKLab | oklab(42.92% -0.0348 -0.0943) |
| OKLCH | oklch(42.92% 0.101 249.7) |
| XYZ | xyz(7.6326, 7.9326, 22.9542) |
| Luminance | 0.0793 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Light Navy
#155084
ΔE00 0.70
Dusk Blue
#26538D
ΔE00 2.34
Deep Sea Blue
#015482
ΔE00 2.90
Light Navy Blue
#2E5A88
ΔE00 2.97
Prussian Blue
#004577
ΔE00 4.33
Cobalt (survey)
#1E488F
ΔE00 4.95
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1B5284 #844D1B
analogous
#1B8481 #1B5284 #1B1E84
triadic
#1B5284 #841B52 #52841B
tetradic
#1B5284 #811B84 #844D1B #1E841B
square
#1B5284 #811B84 #844D1B #1E841B
split-complementary
#1B5284 #841B1E #84811B
monochromatic
#06131E #113251 #1B5284 #2572B7 #4190D8
Accessibility & contrast
On white
8.12
#1B5284 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.59
#1B5284 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1B5284
8.12:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1B5284 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1B5284 | 1.00 | 8.12 | 2.59 | 8.12 |
| #FFFFFF | 8.12 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.59 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.12 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#3B5586
Deuteranopia (green-blind)
#2B4B83
Tritanopia (blue-blind)
#005E64
Achromatopsia (no color)
#505050
Design tokens & code
CSS
--color: #1b5284; /* rgb */ color: rgb(27, 82, 132); /* oklch */ color: oklch(42.9% 0.101 249.7);
Tailwind
colors: {
custom: {
50: '#6882a8',
500: '#1b5284',
950: '#000000',
},
}SCSS
$custom: #1b5284; $custom-light: #6882a8; $custom-dark: #000000;
JSON
{
"hex": "#1b5284",
"rgb": {
"r": 27,
"g": 82,
"b": 132
},
"hsl": {
"h": 208.571,
"s": 66.038,
"l": 31.176
},
"oklch": {
"l": 0.42919,
"c": 0.10052,
"h": 249.7
},
"luminance": 0.07934
}Semantic roles & 50–950 ramp
primary
#1B5284
secondary
#B77B43
accent
#903FE9
background
#F6F7FA
surface
#ECEEF4
border
#C7C9CE
text
#070A0F
muted
#7A7C7F