#20566D
Closest named color: Petrol (#005F6A). oklch(42.8% 0.068 229.5), rgb(32, 86, 109).
Aa
White text reads best on this color (8.03:1).
About this color
#20566D is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.068 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.032 away. White text reads best on it, at 8.03:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.61:1 |
| White text | 8.03:1 |
Values
| HEX | #20566D |
| RGB | rgb(32, 86, 109) |
| HSL | hsl(198, 55%, 28%) |
| OKLCH | oklch(42.8% 0.068 229.5) |
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 #20566D | 8.03:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #20566D | 2.61:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #20566D text on white | 8.03:1 | AAA | Lc 87.6 | Fine for body text |
| #20566D text on black | 2.61:1 | Fails | Lc -14.5 | Not readable |
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 800.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2EBF0
oklch(93.5% 0.012 231.7)
-
Step 200
200
#CBDCE5
oklch(88.4% 0.022 230.6)
-
Step 300
300
#A7C6D5
oklch(80.9% 0.04 228.7)
-
Step 400
400
#77A9C1
oklch(70.8% 0.064 229.4)
-
Step 500
500
#5193B1
oklch(63.1% 0.081 229.4)
-
Step 600
600
#327D9D
oklch(55.7% 0.088 229.6)
-
Step 700
700
#236986
oklch(49.1% 0.082 229.6)
-
Step 800
800 (this color)
#20566D
oklch(42.8% 0.068 229.5)
-
Step 900
900
#204758
oklch(37.7% 0.053 228.9)
-
Step 950
950
#142A34
oklch(27.2% 0.034 229.2)
#20566D 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) | #4A556E | 0.047 |
| Deuteranopia (no green cones) | #404D6D | 0.042 |
| Tritanopia (no blue cones) | #005C5E | 0.040 |
| Achromatopsia (no color) | #505050 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #20566D
#20566D
oklch(42.8% 0.068 229.5)
- #6D442C
#6D442C
oklch(42.9% 0.068 50.5)
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 #20566D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.032
- Deep Teal #00555A ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.039
- YInMn Blue #415A77 ΔE 0.042
- Light Navy #155084 ΔE 0.048
- Light Navy Blue #2E5A88 ΔE 0.048
- Dark Slate Gray #2F4F4F ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.052
Use #20566D 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.