#055D5F
Closest named color: Petrol (#005F6A). oklch(43.5% 0.072 197.4), rgb(5, 93, 95).
Aa
White text reads best on this color (7.67:1).
About this color
#055D5F is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 43%, its chroma 0.072 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.018 away. White text reads best on it, at 7.67:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.73:1 |
| White text | 7.67:1 |
Values
| HEX | #055D5F |
| RGB | rgb(5, 93, 95) |
| HSL | hsl(181, 90%, 20%) |
| OKLCH | oklch(43.5% 0.072 197.4) |
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 #055D5F | 7.67:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #055D5F | 2.73:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #055D5F text on white | 7.67:1 | AAA | Lc 86.2 | Fine for body text |
| #055D5F text on black | 2.73:1 | Fails | Lc -15.9 | 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
#E1EDED
oklch(93.7% 0.013 196.9)
-
Step 200
200
#C8DEDE
oklch(88.4% 0.023 196.7)
-
Step 300
300
#A2CACA
oklch(81% 0.042 196.3)
-
Step 400
400
#6BAEAF
oklch(70.7% 0.068 196.9)
-
Step 500
500
#3D9A9C
oklch(63.2% 0.087 197.2)
-
Step 600
600
#038487
oklch(55.7% 0.094 197.6)
-
Step 700
700
#006F71
oklch(49.1% 0.084 197)
-
Step 800
800 (this color)
#055D5F
oklch(43.5% 0.072 197.4)
-
Step 900
900
#124B4C
oklch(37.8% 0.057 196.7)
-
Step 950
950
#0D2C2D
oklch(27.1% 0.036 198.2)
#055D5F 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) | #56585F | 0.075 |
| Deuteranopia (no green cones) | #4A505F | 0.068 |
| Tritanopia (no blue cones) | #00615D | 0.015 |
| Achromatopsia (no color) | #535353 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #055D5F
#055D5F
oklch(43.5% 0.072 197.4)
- #744042
#744042
oklch(43.6% 0.072 18)
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 #055D5F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.018
- Deep Teal #00555A ΔE 0.026
- Dark Green Blue #1F6357 ΔE 0.030
- Dark Aqua #05696B ΔE 0.039
- Dark Blue Green #005249 ΔE 0.045
- Dark Slate Gray #2F4F4F ΔE 0.047
- Dark Teal #014D4E ΔE 0.054
- Spruce #0A5F38 ΔE 0.065
Use #055D5F 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.