#5580A5
Closest named color: Off Blue (#5684AE). oklch(58.4% 0.074 245.5), rgb(85, 128, 165).
Aa
Black text reads best on this color (5.01:1).
About this color
#5580A5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.074 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.016 away. Black text reads best on it, at 5.01:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.01:1 |
| White text | 4.18:1 |
Values
| HEX | #5580A5 |
| RGB | rgb(85, 128, 165) |
| HSL | hsl(208, 32%, 49%) |
| OKLCH | oklch(58.4% 0.074 245.5) |
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 #5580A5 | 4.18:1 | AA large text | Lc -74.3 | Content text, not long reading |
| Black text on #5580A5 | 5.01:1 | AA | Lc 35.3 | Non-text elements, placeholder text |
| #5580A5 text on white | 4.18:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #5580A5 text on black | 5.01:1 | AA | Lc -32.9 | 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 600.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBF0
oklch(93.7% 0.009 242.8)
-
Step 200
200
#CFDBE5
oklch(88.5% 0.019 243)
-
Step 300
300
#AFC3D5
oklch(80.8% 0.034 245.4)
-
Step 400
400
#85A5C0
oklch(70.7% 0.053 244.1)
-
Step 500
500
#668EB1
oklch(63.1% 0.069 245.6)
-
Step 600
600 (this color)
#5580A5
oklch(58.4% 0.074 245.5)
-
Step 700
700
#3E6586
oklch(49.2% 0.069 245.4)
-
Step 800
800
#33526D
oklch(42.7% 0.058 246)
-
Step 900
900
#2D4458
oklch(37.7% 0.045 245.6)
-
Step 950
950
#1B2834
oklch(27.1% 0.029 246.9)
#5580A5 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) | #7180A7 | 0.035 |
| Deuteranopia (no green cones) | #6678A4 | 0.028 |
| Tritanopia (no blue cones) | #31898C | 0.063 |
| Achromatopsia (no color) | #7C7C7C | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5580A5
#5580A5
oklch(58.4% 0.074 245.5)
- #9A724B
#9A724B
oklch(58.3% 0.074 64.8)
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 #5580A5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.016
- Stormy Blue #507B9C ΔE 0.019
- Dusty Blue #5A86AD ΔE 0.020
- Steel Blue #4682B4 ΔE 0.025
- Cerulean #457B9D ΔE 0.026
- Cool Blue #4984B8 ΔE 0.030
- Grey Blue #647D8E ΔE 0.037
- Dull Blue #49759C ΔE 0.037
Use #5580A5 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.