#1F537E#1F537E
#1F537E is a dark, moderate cyan. Relative luminance 0.080; OKLCH L 42.9% C 0.090 H 247.0°. Best body text is #FFFFFF at 8.09:1 contrast (WCAG AA passes).
Color values
| HEX | #1F537E |
|---|---|
| RGB | rgb(31, 83, 126) |
| HSL | hsl(207, 61%, 31%) |
| HSV | hsv(207, 75%, 49%) |
| CMYK | cmyk(75.4%, 34.1%, 0%, 50.6%) |
| CIE-LAB | lab(33.95, -1.57, -29.22) |
| CIE-LCH | lch(33.95, 29.27, 266.92°) |
| OKLab | oklab(42.93% -0.0352 -0.0829) |
| OKLCH | oklch(42.93% 0.09 247) |
| XYZ | xyz(7.4228, 7.9833, 20.8844) |
| Luminance | 0.0798 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Light Navy
#155084
ΔE00 1.69
Deep Sea Blue
#015482
ΔE00 2.18
Light Navy Blue
#2E5A88
ΔE00 3.00
Dusk Blue
#26538D
ΔE00 3.27
Prussian Blue
#004577
ΔE00 4.69
Twilight Blue
#0A437A
ΔE00 5.58
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F537E #7E4A1F
analogous
#1F7E79 #1F537E #1F237E
triadic
#1F537E #7E1F53 #537E1F
tetradic
#1F537E #791F7E #7E4A1F #237E1F
square
#1F537E #791F7E #7E4A1F #237E1F
split-complementary
#1F537E #7E1F23 #7E791F
monochromatic
#07121C #13334D #1F537E #2B73AF #4692D1
Accessibility & contrast
On white
8.09
#1F537E on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.60
#1F537E on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F537E
8.09:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F537E | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F537E | 1.00 | 8.09 | 2.60 | 8.09 |
| #FFFFFF | 8.09 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.60 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.09 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#3F5580
Deuteranopia (green-blind)
#324C7D
Tritanopia (blue-blind)
#005D62
Achromatopsia (no color)
#505050
Design tokens & code
CSS
--color: #1f537e; /* rgb */ color: rgb(31, 83, 126); /* oklch */ color: oklch(42.9% 0.090 247.0);
Tailwind
colors: {
custom: {
50: '#6883a3',
500: '#1f537e',
950: '#000000',
},
}SCSS
$custom: #1f537e; $custom-light: #6883a3; $custom-dark: #000000;
JSON
{
"hex": "#1f537e",
"rgb": {
"r": 31,
"g": 83,
"b": 126
},
"hsl": {
"h": 207.158,
"s": 60.51,
"l": 30.784
},
"oklch": {
"l": 0.42927,
"c": 0.09007,
"h": 247
},
"luminance": 0.07984
}Semantic roles & 50–950 ramp
primary
#1F537E
secondary
#B17748
accent
#8C44E4
background
#F6F7FA
surface
#EBEEF4
border
#C6C9CE
text
#070A0F
muted
#7A7C7F