#558E81
Closest named color: Dusty Teal (#4C9085). oklch(60.3% 0.064 177.8), rgb(85, 142, 129).
Aa
Black text reads best on this color (5.57:1).
About this color
#558E81 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 60%, its chroma 0.064 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.010 away. Black text reads best on it, at 5.57:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.57:1 |
| White text | 3.76:1 |
Values
| HEX | #558E81 |
| RGB | rgb(85, 142, 129) |
| HSL | hsl(166, 25%, 45%) |
| OKLCH | oklch(60.3% 0.064 177.8) |
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 #558E81 | 3.76:1 | AA large text | Lc -70.6 | Content text, not long reading |
| Black text on #558E81 | 5.57:1 | AA | Lc 38.9 | Non-text elements, placeholder text |
| #558E81 text on white | 3.76:1 | AA large text | Lc 65.1 | Content text, not long reading |
| #558E81 text on black | 5.57:1 | AA | Lc -36.5 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CEDDD9
oklch(88.5% 0.017 178.2)
-
Step 300
300
#ACC8C0
oklch(81% 0.032 176.4)
-
Step 400
400
#7FABA0
oklch(70.6% 0.05 177.7)
-
Step 500
500 (this color)
#558E81
oklch(60.3% 0.064 177.8)
-
Step 600
600
#418173
oklch(55.6% 0.07 177.6)
-
Step 700
700
#336D60
oklch(49.2% 0.065 176.9)
-
Step 800
800
#2B594F
oklch(42.8% 0.054 177.7)
-
Step 900
900
#284941
oklch(37.7% 0.041 176.6)
-
Step 950
950
#182B26
oklch(27.1% 0.027 175.7)
#558E81 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) | #8A8880 | 0.067 |
| Deuteranopia (no green cones) | #808182 | 0.063 |
| Tritanopia (no blue cones) | #42908A | 0.019 |
| Achromatopsia (no color) | #838383 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558E81
#558E81
oklch(60.3% 0.064 177.8)
- #A17181
#A17181
oklch(60.2% 0.064 357.5)
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 #558E81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.010
- Slate Green #658D6D ΔE 0.031
- Sea #3C9992 ΔE 0.036
- Grey Teal #5E9B8A ΔE 0.040
- Teal Green #0A9396 ΔE 0.046
- Persian Green #2A9D8F ΔE 0.047
- Blue Green #0F9B8E ΔE 0.048
- Ocean Green #3D9973 ΔE 0.049
Use #558E81 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.