#20566B
Closest named color: Petrol (#005F6A). oklch(42.7% 0.066 227.2), rgb(32, 86, 107).
Aa
White text reads best on this color (8.06:1).
About this color
#20566B is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.066 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.031 away. White text reads best on it, at 8.06:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.60:1 |
| White text | 8.06:1 |
Values
| HEX | #20566B |
| RGB | rgb(32, 86, 107) |
| HSL | hsl(197, 54%, 27%) |
| OKLCH | oklch(42.7% 0.066 227.2) |
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 #20566B | 8.06:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #20566B | 2.60:1 | Fails | Lc 16.3 | Dividers and decoration only |
| #20566B text on white | 8.06:1 | AAA | Lc 87.7 | Fine for body text |
| #20566B text on black | 2.60:1 | Fails | Lc -14.4 | 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
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CBDCE4
oklch(88.4% 0.021 227.6)
-
Step 300
300
#A7C6D4
oklch(80.8% 0.039 226.9)
-
Step 400
400
#77A9BF
oklch(70.7% 0.062 227.2)
-
Step 500
500
#5193AF
oklch(63.1% 0.079 227.6)
-
Step 600
600
#327D9A
oklch(55.6% 0.086 227)
-
Step 700
700
#246984
oklch(49% 0.08 228)
-
Step 800
800 (this color)
#20566B
oklch(42.7% 0.066 227.2)
-
Step 900
900
#204757
oklch(37.7% 0.052 227.4)
-
Step 950
950
#142A33
oklch(27.1% 0.033 226.5)
#20566B 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) | #4B546C | 0.049 |
| Deuteranopia (no green cones) | #404D6B | 0.042 |
| Tritanopia (no blue cones) | #005C5D | 0.038 |
| Achromatopsia (no color) | #505050 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #20566B
#20566B
oklch(42.7% 0.066 227.2)
- #6D432E
#6D432E
oklch(42.7% 0.067 47)
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 #20566B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.031
- Deep Teal #00555A ΔE 0.035
- Deep Sea Blue #015482 ΔE 0.042
- YInMn Blue #415A77 ΔE 0.044
- Dark Slate Gray #2F4F4F ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.051
- Light Navy #155084 ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.051
Use #20566B 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.