#558A74
Closest named color: Slate Green (#658D6D). oklch(59% 0.066 166), rgb(85, 138, 116).
Aa
Black text reads best on this color (5.27:1).
About this color
#558A74 is a medium-dark, muted green. In OKLCH its lightness is 59%, its chroma 0.066 and its hue 166°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.024 away. Black text reads best on it, at 5.27:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.066) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.27:1 |
| White text | 3.98:1 |
Values
| HEX | #558A74 |
| RGB | rgb(85, 138, 116) |
| HSL | hsl(155, 24%, 44%) |
| OKLCH | oklch(59% 0.066 166) |
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 #558A74 | 3.98:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #558A74 | 5.27:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #558A74 text on white | 3.98:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #558A74 text on black | 5.27:1 | AA | Lc -34.6 | 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 600.
-
Step 50
50
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5ECE8
oklch(93.7% 0.009 161.3)
-
Step 200
200
#CFDDD6
oklch(88.5% 0.018 164.6)
-
Step 300
300
#AFC7BC
oklch(80.8% 0.03 166.3)
-
Step 400
400
#85AB9A
oklch(70.8% 0.048 165.9)
-
Step 500
500
#659681
oklch(63.2% 0.062 165.9)
-
Step 600
600 (this color)
#558A74
oklch(59% 0.066 166)
-
Step 700
700
#3C6C59
oklch(49.1% 0.061 166.5)
-
Step 800
800
#325848
oklch(42.7% 0.051 165.3)
-
Step 900
900
#2C483D
oklch(37.6% 0.039 167.6)
-
Step 950
950
#1A2A24
oklch(26.9% 0.024 169.1)
#558A74 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) | #888373 | 0.067 |
| Deuteranopia (no green cones) | #7F7D75 | 0.064 |
| Tritanopia (no blue cones) | #478A84 | 0.026 |
| Achromatopsia (no color) | #7F7F7F | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558A74
#558A74
oklch(59% 0.066 166)
- #9B6D85
#9B6D85
oklch(58.9% 0.067 346.7)
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 #558A74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.024
- Dusty Teal #4C9085 ΔE 0.025
- Dark Sage #598556 ΔE 0.040
- Ocean Green #3D9973 ΔE 0.048
- Green Grey #77926F ΔE 0.050
- Sea #3C9992 ΔE 0.052
- Viridian #1E9167 ΔE 0.052
- Dark Cyan #008B8B ΔE 0.053
Use #558A74 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.