#1F518D#1F518D
#1F518D is a dark, moderate cyan. Relative luminance 0.081; OKLCH L 43.4% C 0.113 H 255.0°. Best body text is #FFFFFF at 8.02:1 contrast (WCAG AA passes).
Color values
| HEX | #1F518D |
|---|---|
| RGB | rgb(31, 81, 141) |
| HSL | hsl(213, 64%, 34%) |
| HSV | hsv(213, 78%, 55%) |
| CMYK | cmyk(78%, 42.6%, 0%, 44.7%) |
| CIE-LAB | lab(34.19, 5.63, -38.06) |
| CIE-LCH | lch(34.19, 38.47, 278.41°) |
| OKLab | oklab(43.4% -0.0292 -0.1088) |
| OKLCH | oklch(43.4% 0.113 255) |
| XYZ | xyz(8.3134, 8.0983, 26.3191) |
| Luminance | 0.0810 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Dusk Blue
#26538D
ΔE00 0.83
Light Navy
#155084
ΔE00 2.05
Light Navy Blue
#2E5A88
ΔE00 3.30
Cobalt (survey)
#1E488F
ΔE00 3.48
Denim Blue
#3B5B92
ΔE00 4.38
Deep Sea Blue
#015482
ΔE00 4.82
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F518D #8D5B1F
analogous
#1F888D #1F518D #241F8D
triadic
#1F518D #8D1F51 #518D1F
tetradic
#1F518D #8D1F88 #8D5B1F #1F8D24
square
#1F518D #8D1F88 #8D5B1F #1F8D24
split-complementary
#1F518D #8D241F #888D1F
monochromatic
#091729 #14345B #1F518D #2A6EBF #4E8DD8
Accessibility & contrast
On white
8.02
#1F518D on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.62
#1F518D on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F518D
8.02:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F518D | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F518D | 1.00 | 8.02 | 2.62 | 8.02 |
| #FFFFFF | 8.02 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.62 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.02 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#34568F
Deuteranopia (green-blind)
#214C8C
Tritanopia (blue-blind)
#005F68
Achromatopsia (no color)
#505050
Design tokens & code
CSS
--color: #1f518d; /* rgb */ color: rgb(31, 81, 141); /* oklch */ color: oklch(43.4% 0.113 255.0);
Tailwind
colors: {
custom: {
50: '#6b81af',
500: '#1f518d',
950: '#000000',
},
}SCSS
$custom: #1f518d; $custom-light: #6b81af; $custom-dark: #000000;
JSON
{
"hex": "#1f518d",
"rgb": {
"r": 31,
"g": 81,
"b": 141
},
"hsl": {
"h": 212.727,
"s": 63.953,
"l": 33.725
},
"oklch": {
"l": 0.43396,
"c": 0.11265,
"h": 255
},
"luminance": 0.08099
}Semantic roles & 50–950 ramp
primary
#1F518D
secondary
#BB894D
accent
#9B41E7
background
#F6F7FA
surface
#ECEEF4
border
#C7C9CE
text
#080A10
muted
#7A7C7F