#5580D5
Closest named color: Dark Sky Blue (#448EE4). oklch(60.9% 0.138 262.7), rgb(85, 128, 213).
Aa
Black text reads best on this color (5.43:1).
About this color
#5580D5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.138 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.040 away. Black text reads best on it, at 5.43:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.43:1 |
| White text | 3.86:1 |
Values
| HEX | #5580D5 |
| RGB | rgb(85, 128, 213) |
| HSL | hsl(220, 60%, 58%) |
| OKLCH | oklch(60.9% 0.138 262.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #5580D5 | 3.86:1 | AA large text | Lc -71.4 | Content text, not long reading |
| Black text on #5580D5 | 5.43:1 | AA | Lc 38.2 | Non-text elements, placeholder text |
| #5580D5 text on white | 3.86:1 | AA large text | Lc 65.9 | Content text, not long reading |
| #5580D5 text on black | 5.43:1 | AA | Lc -35.8 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CCDAF3
oklch(88.6% 0.038 262.1)
-
Step 300
300
#AAC1ED
oklch(80.9% 0.067 263.3)
-
Step 400
400
#7CA0E4
oklch(70.7% 0.108 262.5)
-
Step 500
500 (this color)
#5580D5
oklch(60.9% 0.138 262.7)
-
Step 600
600
#426FCA
oklch(55.6% 0.15 262.7)
-
Step 700
700
#345CAF
oklch(49.1% 0.14 262.9)
-
Step 800
800
#2B4C8E
oklch(42.8% 0.116 262.6)
-
Step 900
900
#274071
oklch(37.8% 0.09 262.5)
-
Step 950
950
#172642
oklch(27.1% 0.056 262)
#5580D5 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #5B88D8 | 0.023 |
| Deuteranopia (no green cones) | #497CD3 | 0.018 |
| Tritanopia (no blue cones) | #0093A0 | 0.119 |
| Achromatopsia (no color) | #828282 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5580D5
#5580D5
oklch(60.9% 0.138 262.7)
- #A77A00
#A77A00
oklch(60.8% 0.125 82.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #5580D5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.040
- Soft Blue #6488EA ΔE 0.041
- Water Blue #0E87CC ΔE 0.049
- Windows Blue #3778BF ΔE 0.050
- Cool Blue #4984B8 ΔE 0.051
- Steel Blue #4682B4 ΔE 0.056
- Faded Blue #658CBB ΔE 0.061
- Chefchaouen Blue #4895EF ΔE 0.061
Use #5580D5 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.