#558F6F
Closest named color: Slate Green (#658D6D). oklch(60.1% 0.079 158.7), rgb(85, 143, 111).
Aa
Black text reads best on this color (5.54:1).
About this color
#558F6F is a medium-dark, moderately saturated green. In OKLCH its lightness is 60%, its chroma 0.079 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.017 away. Black text reads best on it, at 5.54:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.079) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.54:1 |
| White text | 3.78:1 |
Values
| HEX | #558F6F |
| RGB | rgb(85, 143, 111) |
| HSL | hsl(147, 25%, 45%) |
| OKLCH | oklch(60.1% 0.079 158.7) |
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 #558F6F | 3.78:1 | AA large text | Lc -70.8 | Content text, not long reading |
| Black text on #558F6F | 5.54:1 | AA | Lc 38.8 | Non-text elements, placeholder text |
| #558F6F text on white | 3.78:1 | AA large text | Lc 65.3 | Content text, not long reading |
| #558F6F text on black | 5.54:1 | AA | Lc -36.4 | 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
#E4ECE7
oklch(93.6% 0.011 158.8)
-
Step 200
200
#CEDED4
oklch(88.6% 0.022 158.5)
-
Step 300
300
#ADC9B8
oklch(81% 0.038 158.8)
-
Step 400
400
#80AD93
oklch(70.8% 0.062 159)
-
Step 500
500 (this color)
#558F6F
oklch(60.1% 0.079 158.7)
-
Step 600
600
#428361
oklch(55.7% 0.086 159)
-
Step 700
700
#346E50
oklch(49% 0.079 159)
-
Step 800
800
#2C5A41
oklch(42.7% 0.066 158.1)
-
Step 900
900
#284A37
oklch(37.7% 0.052 158.2)
-
Step 950
950
#182B21
oklch(26.9% 0.031 160.3)
#558F6F 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) | #8E876D | 0.074 |
| Deuteranopia (no green cones) | #858171 | 0.071 |
| Tritanopia (no blue cones) | #488E86 | 0.036 |
| Achromatopsia (no color) | #838383 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558F6F
#558F6F
oklch(60.1% 0.079 158.7)
- #A06E90
#A06E90
oklch(60.1% 0.079 339.1)
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 #558F6F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.017
- Dusty Teal #4C9085 ΔE 0.032
- Ocean Green #3D9973 ΔE 0.032
- Dark Sage #598556 ΔE 0.037
- Green Grey #77926F ΔE 0.042
- Light Forest Green #4F9153 ΔE 0.042
- Viridian #1E9167 ΔE 0.043
- Grey Teal #5E9B8A ΔE 0.048
Use #558F6F 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.