#5580AD
Closest named color: Off Blue (#5684AE). oklch(58.7% 0.084 250.5), rgb(85, 128, 173).
Aa
Black text reads best on this color (5.07:1).
About this color
#5580AD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.084 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.012 away. Black text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.07:1 |
| White text | 4.13:1 |
Values
| HEX | #5580AD |
| RGB | rgb(85, 128, 173) |
| HSL | hsl(211, 35%, 51%) |
| OKLCH | oklch(58.7% 0.084 250.5) |
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 #5580AD | 4.13:1 | AA large text | Lc -73.8 | Content text, not long reading |
| Black text on #5580AD | 5.07:1 | AA | Lc 35.7 | Non-text elements, placeholder text |
| #5580AD text on white | 4.13:1 | AA large text | Lc 68.3 | Content text, not long reading |
| #5580AD text on black | 5.07:1 | AA | Lc -33.3 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EBF1
oklch(93.7% 0.01 247.9)
-
Step 200
200
#CFDAE7
oklch(88.4% 0.022 252.5)
-
Step 300
300
#AFC3D9
oklch(80.9% 0.038 250.8)
-
Step 400
400
#84A4C6
oklch(70.7% 0.061 250.2)
-
Step 500
500
#658DB7
oklch(63.1% 0.078 250.3)
-
Step 600
600 (this color)
#5580AD
oklch(58.7% 0.084 250.5)
-
Step 700
700
#3D648C
oklch(49.2% 0.078 250.3)
-
Step 800
800
#335171
oklch(42.6% 0.064 251)
-
Step 900
900
#2D445C
oklch(37.9% 0.05 250.3)
-
Step 950
950
#1A2836
oklch(27.1% 0.032 249.1)
#5580AD 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) | #6E82AF | 0.032 |
| Deuteranopia (no green cones) | #6379AC | 0.024 |
| Tritanopia (no blue cones) | #2A8A8F | 0.073 |
| Achromatopsia (no color) | #7D7D7D | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5580AD
#5580AD
oklch(58.7% 0.084 250.5)
- #9C7442
#9C7442
oklch(58.8% 0.084 71.1)
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 #5580AD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.012
- Steel Blue #4682B4 ΔE 0.017
- Dusty Blue #5A86AD ΔE 0.019
- Cool Blue #4984B8 ΔE 0.020
- Stormy Blue #507B9C ΔE 0.029
- Cerulean #457B9D ΔE 0.033
- Dull Blue #49759C ΔE 0.041
- Faded Blue #658CBB ΔE 0.043
Use #5580AD 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.