#558E75
Closest named color: Slate Green (#658D6D). oklch(60% 0.072 164.4), rgb(85, 142, 117).
Aa
Black text reads best on this color (5.51:1).
About this color
#558E75 is a medium-dark, moderately saturated green. In OKLCH its lightness is 60%, its chroma 0.072 and its hue 164°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.019 away. Black text reads best on it, at 5.51:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.072) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.51:1 |
| White text | 3.80:1 |
Values
| HEX | #558E75 |
| RGB | rgb(85, 142, 117) |
| HSL | hsl(154, 25%, 45%) |
| OKLCH | oklch(60% 0.072 164.4) |
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 #558E75 | 3.80:1 | AA large text | Lc -71.0 | Content text, not long reading |
| Black text on #558E75 | 5.51:1 | AA | Lc 38.6 | Non-text elements, placeholder text |
| #558E75 text on white | 3.80:1 | AA large text | Lc 65.5 | Content text, not long reading |
| #558E75 text on black | 5.51:1 | AA | Lc -36.1 | 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
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E4ECE8
oklch(93.6% 0.01 164.9)
-
Step 200
200
#CEDDD6
oklch(88.4% 0.019 166.3)
-
Step 300
300
#ADC8BB
oklch(80.9% 0.034 164.9)
-
Step 400
400
#80AC98
oklch(70.7% 0.056 165.2)
-
Step 500
500 (this color)
#558E75
oklch(60% 0.072 164.4)
-
Step 600
600
#438267
oklch(55.6% 0.078 164)
-
Step 700
700
#346E56
oklch(49.2% 0.073 164.4)
-
Step 800
800
#2C5946
oklch(42.6% 0.06 164.4)
-
Step 900
900
#284A3B
oklch(37.8% 0.048 164)
-
Step 950
950
#182B23
oklch(27% 0.029 165.8)
#558E75 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) | #8C8774 | 0.071 |
| Deuteranopia (no green cones) | #838077 | 0.069 |
| Tritanopia (no blue cones) | #468E87 | 0.029 |
| Achromatopsia (no color) | #838383 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558E75
#558E75
oklch(60% 0.072 164.4)
- #9F6F8A
#9F6F8A
oklch(59.9% 0.071 344.7)
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 #558E75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.019
- Dusty Teal #4C9085 ΔE 0.023
- Ocean Green #3D9973 ΔE 0.038
- Dark Sage #598556 ΔE 0.043
- Green Grey #77926F ΔE 0.043
- Grey Teal #5E9B8A ΔE 0.045
- Sea #3C9992 ΔE 0.045
- Viridian #1E9167 ΔE 0.049
Use #558E75 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.