#1F528C#1F528C
#1F528C is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.6% C 0.110 H 254.0°. Best body text is #FFFFFF at 7.94:1 contrast (WCAG AA passes).
Color values
| HEX | #1F528C |
|---|---|
| RGB | rgb(31, 82, 140) |
| HSL | hsl(212, 64%, 34%) |
| HSV | hsv(212, 78%, 55%) |
| CMYK | cmyk(77.9%, 41.4%, 0%, 45.1%) |
| CIE-LAB | lab(34.43, 4.57, -37.05) |
| CIE-LCH | lch(34.43, 37.33, 277.03°) |
| OKLab | oklab(43.57% -0.0303 -0.1058) |
| OKLCH | oklch(43.57% 0.11 254) |
| XYZ | xyz(8.3142, 8.2184, 25.9540) |
| Luminance | 0.0822 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Dusk Blue
#26538D
ΔE00 0.86
Light Navy
#155084
ΔE00 1.80
Light Navy Blue
#2E5A88
ΔE00 2.94
Cobalt (survey)
#1E488F
ΔE00 3.93
Denim Blue
#3B5B92
ΔE00 4.34
Deep Sea Blue
#015482
ΔE00 4.43
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#1F528C #8C591F
analogous
#1F888C #1F528C #231F8C
triadic
#1F528C #8C1F52 #528C1F
tetradic
#1F528C #8C1F88 #8C591F #1F8C23
square
#1F528C #8C1F88 #8C591F #1F8C23
split-complementary
#1F528C #8C231F #888C1F
monochromatic
#091728 #14355A #1F528C #2A6FBE #4E8ED8
Accessibility & contrast
On white
7.94
#1F528C on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.64
#1F528C on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #1F528C
7.94:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##1F528C | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##1F528C | 1.00 | 7.94 | 2.64 | 7.94 |
| #FFFFFF | 7.94 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.64 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.94 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#36568E
Deuteranopia (green-blind)
#244C8B
Tritanopia (blue-blind)
#006068
Achromatopsia (no color)
#515151
Design tokens & code
CSS
--color: #1f528c; /* rgb */ color: rgb(31, 82, 140); /* oklch */ color: oklch(43.6% 0.110 254.0);
Tailwind
colors: {
custom: {
50: '#6b82ae',
500: '#1f528c',
950: '#000000',
},
}SCSS
$custom: #1f528c; $custom-light: #6b82ae; $custom-dark: #000000;
JSON
{
"hex": "#1f528c",
"rgb": {
"r": 31,
"g": 82,
"b": 140
},
"hsl": {
"h": 211.927,
"s": 63.743,
"l": 33.529
},
"oklch": {
"l": 0.43568,
"c": 0.1101,
"h": 254
},
"luminance": 0.08219
}Semantic roles & 50–950 ramp
primary
#1F528C
secondary
#BB874C
accent
#9941E7
background
#F6F7FA
surface
#ECEEF4
border
#C7C9CE
text
#080A10
muted
#7A7C7F