#055A5F
Closest named color: Deep Teal (#00555A). oklch(42.6% 0.071 201.5), rgb(5, 90, 95).
Aa
White text reads best on this color (7.97:1).
About this color
#055A5F is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 43%, its chroma 0.071 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.017 away. White text reads best on it, at 7.97:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.63:1 |
| White text | 7.97:1 |
Values
| HEX | #055A5F |
| RGB | rgb(5, 90, 95) |
| HSL | hsl(183, 90%, 20%) |
| OKLCH | oklch(42.6% 0.071 201.5) |
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 #055A5F | 7.97:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #055A5F | 2.63:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #055A5F text on white | 7.97:1 | AAA | Lc 87.2 | Fine for body text |
| #055A5F text on black | 2.63:1 | Fails | Lc -14.9 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECED
oklch(93.5% 0.012 203.5)
-
Step 200
200
#C8DEDF
oklch(88.5% 0.024 200.1)
-
Step 300
300
#A2C9CC
oklch(80.9% 0.042 202.2)
-
Step 400
400
#6DADB2
oklch(70.6% 0.066 202.1)
-
Step 500
500
#3F999F
oklch(63.2% 0.085 201.3)
-
Step 600
600
#0D838A
oklch(55.6% 0.092 201.6)
-
Step 700
700
#006E75
oklch(49% 0.083 202.5)
-
Step 800
800 (this color)
#055A5F
oklch(42.6% 0.071 201.5)
-
Step 900
900
#144A4E
oklch(37.6% 0.055 202.2)
-
Step 950
950
#0E2C2E
oklch(27.2% 0.035 201.3)
#055A5F 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) | #52555F | 0.072 |
| Deuteranopia (no green cones) | #474D5F | 0.067 |
| Tritanopia (no blue cones) | #005E5B | 0.017 |
| Achromatopsia (no color) | #515151 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #055A5F
#055A5F
oklch(42.6% 0.071 201.5)
- #713E3D
#713E3D
oklch(42.6% 0.072 21.7)
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 #055A5F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.017
- Petrol #005F6A ΔE 0.021
- Dark Green Blue #1F6357 ΔE 0.039
- Dark Blue Green #005249 ΔE 0.040
- Dark Slate Gray #2F4F4F ΔE 0.041
- Dark Teal #014D4E ΔE 0.046
- Dark Aqua #05696B ΔE 0.048
- Charcoal #264653 ΔE 0.062
Use #055A5F 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.