#1B5288#1B5288
#1B5288 is a dark, moderate cyan. Relative luminance 0.080; OKLCH L 43.2% C 0.106 H 251.4°. Best body text is #FFFFFF at 8.05:1 contrast (WCAG AA passes).
Color values
| HEX | #1B5288 |
|---|---|
| RGB | rgb(27, 82, 136) |
| HSL | hsl(210, 67%, 32%) |
| HSV | hsv(210, 80%, 53%) |
| CMYK | cmyk(80.1%, 39.7%, 0%, 46.7%) |
| CIE-LAB | lab(34.07, 2.47, -35.18) |
| CIE-LCH | lch(34.07, 35.27, 274.02°) |
| OKLab | oklab(43.18% -0.0338 -0.1004) |
| OKLCH | oklch(43.18% 0.106 251.4) |
| XYZ | xyz(7.9115, 8.0442, 24.4235) |
| Luminance | 0.0804 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Light Navy
#155084
ΔE00 0.95
Dusk Blue
#26538D
ΔE00 1.75
Light Navy Blue
#2E5A88
ΔE00 2.91
Deep Sea Blue
#015482
ΔE00 3.49
Prussian Blue
#004577
ΔE00 4.51
Cobalt (survey)
#1E488F
ΔE00 4.54
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1B5288 #88511B
analogous
#1B8888 #1B5288 #1B1B88
triadic
#1B5288 #881B52 #52881B
tetradic
#1B5288 #881B88 #88511B #1B881B
square
#1B5288 #881B88 #88511B #1B881B
split-complementary
#1B5288 #881B1B #88881B
monochromatic
#071422 #113355 #1B5288 #2571BB #448FDA
Accessibility & contrast
On white
8.05
#1B5288 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.61
#1B5288 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1B5288
8.05:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1B5288 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1B5288 | 1.00 | 8.05 | 2.61 | 8.05 |
| #FFFFFF | 8.05 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.61 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.05 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#38568A
Deuteranopia (green-blind)
#274C87
Tritanopia (blue-blind)
#005F66
Achromatopsia (no color)
#505050
Design tokens & code
CSS
--color: #1b5288; /* rgb */ color: rgb(27, 82, 136); /* oklch */ color: oklch(43.2% 0.106 251.4);
Tailwind
colors: {
custom: {
50: '#6982ab',
500: '#1b5288',
950: '#000000',
},
}SCSS
$custom: #1b5288; $custom-light: #6982ab; $custom-dark: #000000;
JSON
{
"hex": "#1b5288",
"rgb": {
"r": 27,
"g": 82,
"b": 136
},
"hsl": {
"h": 209.725,
"s": 66.871,
"l": 31.961
},
"oklch": {
"l": 0.43177,
"c": 0.10592,
"h": 251.4
},
"luminance": 0.08045
}Semantic roles & 50–950 ramp
primary
#1B5288
secondary
#BB7F44
accent
#933EEA
background
#F6F7FA
surface
#ECEEF4
border
#C7C9CE
text
#070A10
muted
#7A7C7F