#005D66
Closest named color: Petrol (#005F6A). oklch(43.7% 0.075 206.3), rgb(0, 93, 102).
Aa
White text reads best on this color (7.61:1).
About this color
#005D66 is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 44%, its chroma 0.075 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.008 away. White text reads best on it, at 7.61:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.75:1 |
| White text | 7.61:1 |
Values
| HEX | #005D66 |
| RGB | rgb(0, 93, 102) |
| HSL | hsl(185, 100%, 20%) |
| OKLCH | oklch(43.7% 0.075 206.3) |
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 #005D66 | 7.61:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #005D66 | 2.75:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #005D66 text on white | 7.61:1 | AAA | Lc 85.9 | Fine for body text |
| #005D66 text on black | 2.75:1 | Fails | Lc -16.1 | Dividers and decoration only |
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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECEE
oklch(93.5% 0.012 209.8)
-
Step 200
200
#C8DEE1
oklch(88.5% 0.024 206.6)
-
Step 300
300
#A0C9CF
oklch(80.8% 0.044 207.3)
-
Step 400
400
#6AADB6
oklch(70.6% 0.069 206.6)
-
Step 500
500
#3999A4
oklch(63.2% 0.089 205.8)
-
Step 600
600
#00838F
oklch(55.7% 0.095 206.1)
-
Step 700
700
#006E78
oklch(49.1% 0.084 205.8)
-
Step 800
800 (this color)
#005D66
oklch(43.7% 0.075 206.3)
-
Step 900
900
#0F4A51
oklch(37.6% 0.058 206.9)
-
Step 950
950
#0C2C2F
oklch(27.1% 0.037 203.8)
#005D66 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) | #545967 | 0.073 |
| Deuteranopia (no green cones) | #485066 | 0.067 |
| Tritanopia (no blue cones) | #006260 | 0.022 |
| Achromatopsia (no color) | #545454 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #005D66
#005D66
oklch(43.7% 0.075 206.3)
- #76403B
#76403B
oklch(43.7% 0.076 26.2)
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 #005D66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.008
- Deep Teal #00555A ΔE 0.029
- Dark Aqua #05696B ΔE 0.038
- Dark Green Blue #1F6357 ΔE 0.038
- Dark Slate Gray #2F4F4F ΔE 0.051
- Dark Blue Green #005249 ΔE 0.053
- Dark Teal #014D4E ΔE 0.058
- YInMn Blue #415A77 ΔE 0.059
Use #005D66 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.