#1B5B97#1B5B97
#1B5B97 is a mid, moderate cyan. Relative luminance 0.100; OKLCH L 46.3% C 0.116 H 250.9°. Best body text is #FFFFFF at 7.02:1 contrast (WCAG AA passes).
Color values
| HEX | #1B5B97 |
|---|---|
| RGB | rgb(27, 91, 151) |
| HSL | hsl(209, 70%, 35%) |
| HSV | hsv(209, 82%, 59%) |
| CMYK | cmyk(82.1%, 39.7%, 0%, 40.8%) |
| CIE-LAB | lab(37.75, 2.59, -38.44) |
| CIE-LCH | lch(37.75, 38.53, 273.86°) |
| OKLab | oklab(46.34% -0.0381 -0.1098) |
| OKLCH | oklch(46.34% 0.116 250.9) |
| XYZ | xyz(9.7769, 9.9484, 30.6771) |
| Luminance | 0.0995 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Light Navy Blue
#2E5A88
ΔE00 2.29
Dusk Blue
#26538D
ΔE00 3.53
Denim (survey)
#3B638C
ΔE00 4.02
Light Navy
#155084
ΔE00 4.03
Deep Sea Blue
#015482
ΔE00 4.30
Denim Blue
#3B5B92
ΔE00 4.48
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1B5B97 #97571B
analogous
#1B9795 #1B5B97 #1B1D97
triadic
#1B5B97 #971B5B #5B971B
tetradic
#1B5B97 #951B97 #97571B #1D971B
square
#1B5B97 #951B97 #97571B #1D971B
split-complementary
#1B5B97 #971B1D #97951B
monochromatic
#081C2F #123C63 #1B5B97 #247ACB #4D99DF
Accessibility & contrast
On white
7.02
#1B5B97 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.99
#1B5B97 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1B5B97
7.02:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1B5B97 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1B5B97 | 1.00 | 7.02 | 2.99 | 7.02 |
| #FFFFFF | 7.02 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.99 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.02 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#3E5F99
Deuteranopia (green-blind)
#2A5496
Tritanopia (blue-blind)
#006971
Achromatopsia (no color)
#595959
Design tokens & code
CSS
--color: #1b5b97; /* rgb */ color: rgb(27, 91, 151); /* oklch */ color: oklch(46.3% 0.116 250.9);
Tailwind
colors: {
custom: {
50: '#6c89b6',
500: '#1b5b97',
950: '#000000',
},
}SCSS
$custom: #1b5b97; $custom-light: #6c89b6; $custom-dark: #000000;
JSON
{
"hex": "#1b5b97",
"rgb": {
"r": 27,
"g": 91,
"b": 151
},
"hsl": {
"h": 209.032,
"s": 69.663,
"l": 34.902
},
"oklch": {
"l": 0.46338,
"c": 0.1162,
"h": 250.9
},
"luminance": 0.0995
}Semantic roles & 50–950 ramp
primary
#1B5B97
secondary
#C1854C
accent
#913BEC
background
#F7F8FB
surface
#EDEFF6
border
#C8CAD0
text
#080B11
muted
#7B7C80