#1F5289#1F5289
#1F5289 is a dark, moderate cyan. Relative luminance 0.081; OKLCH L 43.4% C 0.106 H 252.9°. Best body text is #FFFFFF at 8.00:1 contrast (WCAG AA passes).
Color values
| HEX | #1F5289 |
|---|---|
| RGB | rgb(31, 82, 137) |
| HSL | hsl(211, 63%, 33%) |
| HSV | hsv(211, 77%, 54%) |
| CMYK | cmyk(77.4%, 40.1%, 0%, 46.3%) |
| CIE-LAB | lab(34.25, 3.38, -35.50) |
| CIE-LCH | lch(34.25, 35.66, 275.44°) |
| OKLab | oklab(43.37% -0.0311 -0.1013) |
| OKLCH | oklch(43.37% 0.106 252.9) |
| XYZ | xyz(8.0960, 8.1311, 24.8048) |
| Luminance | 0.0813 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Dusk Blue
#26538D
ΔE00 1.19
Light Navy
#155084
ΔE00 1.41
Light Navy Blue
#2E5A88
ΔE00 2.84
Deep Sea Blue
#015482
ΔE00 4.04
Cobalt (survey)
#1E488F
ΔE00 4.16
Denim Blue
#3B5B92
ΔE00 4.55
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F5289 #89561F
analogous
#1F8789 #1F5289 #211F89
triadic
#1F5289 #891F52 #52891F
tetradic
#1F5289 #891F87 #89561F #1F8921
square
#1F5289 #891F87 #89561F #1F8921
split-complementary
#1F5289 #89211F #87891F
monochromatic
#081625 #143457 #1F5289 #2A70BB #4C8FD6
Accessibility & contrast
On white
8.00
#1F5289 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.63
#1F5289 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F5289
8.00:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F5289 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F5289 | 1.00 | 8.00 | 2.63 | 8.00 |
| #FFFFFF | 8.00 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.63 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.00 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#38568B
Deuteranopia (green-blind)
#274C88
Tritanopia (blue-blind)
#005F67
Achromatopsia (no color)
#515151
Design tokens & code
CSS
--color: #1f5289; /* rgb */ color: rgb(31, 82, 137); /* oklch */ color: oklch(43.4% 0.106 252.9);
Tailwind
colors: {
custom: {
50: '#6b82ac',
500: '#1f5289',
950: '#000000',
},
}SCSS
$custom: #1f5289; $custom-light: #6b82ac; $custom-dark: #000000;
JSON
{
"hex": "#1f5289",
"rgb": {
"r": 31,
"g": 82,
"b": 137
},
"hsl": {
"h": 211.132,
"s": 63.095,
"l": 32.941
},
"oklch": {
"l": 0.4337,
"c": 0.10595,
"h": 252.9
},
"luminance": 0.08132
}Semantic roles & 50–950 ramp
primary
#1F5289
secondary
#B9844B
accent
#9742E6
background
#F6F7FA
surface
#ECEEF4
border
#C7C9CE
text
#070A10
muted
#7A7C7F