#558F51
Closest named color: Light Forest Green (#4F9153). oklch(59.4% 0.11 142.7), rgb(85, 143, 81).
Aa
Black text reads best on this color (5.43:1).
About this color
#558F51 is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.110 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Forest Green (#4F9153), ΔE 0.007 away. Black text reads best on it, at 5.43:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Light Forest Green (#4F9153) |
| Black text | 5.43:1 |
| White text | 3.86:1 |
Values
| HEX | #558F51 |
| RGB | rgb(85, 143, 81) |
| HSL | hsl(116, 28%, 44%) |
| OKLCH | oklch(59.4% 0.11 142.7) |
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 #558F51 | 3.86:1 | AA large text | Lc -71.5 | Content text, not long reading |
| Black text on #558F51 | 5.43:1 | AA | Lc 38.1 | Non-text elements, placeholder text |
| #558F51 text on white | 3.86:1 | AA large text | Lc 66.0 | Content text, not long reading |
| #558F51 text on black | 5.43:1 | AA | Lc -35.7 | 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
#F3F7F2
oklch(97.2% 0.008 139.4)
-
Step 100
100
#E4EDE3
oklch(93.7% 0.016 142.6)
-
Step 200
200
#CEDFCD
oklch(88.6% 0.03 143.8)
-
Step 300
300
#ADCAAA
oklch(80.9% 0.054 142.5)
-
Step 400
400
#81AF7D
oklch(70.8% 0.087 142.6)
-
Step 500
500 (this color)
#558F51
oklch(59.4% 0.11 142.7)
-
Step 600
600
#458541
oklch(55.7% 0.12 142.6)
-
Step 700
700
#367033
oklch(49% 0.111 142.7)
-
Step 800
800
#2E5B2B
oklch(42.6% 0.091 142.6)
-
Step 900
900
#294B27
oklch(37.7% 0.072 142.8)
-
Step 950
950
#192C17
oklch(27% 0.045 142.1)
#558F51 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) | #92854C | 0.082 |
| Deuteranopia (no green cones) | #898055 | 0.079 |
| Tritanopia (no blue cones) | #4F8C80 | 0.070 |
| Achromatopsia (no color) | #828282 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558F51
#558F51
oklch(59.4% 0.11 142.7)
- #9D67A5
#9D67A5
oklch(59.4% 0.11 322.2)
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 #558F51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Forest Green #4F9153 ΔE 0.007
- Fern Green #548D44 ΔE 0.015
- Moss Green #658B38 ΔE 0.028
- Dark Sage #598556 ΔE 0.033
- Sea Green #2E8B57 ΔE 0.036
- Swamp #698339 ΔE 0.039
- Mossy Green #638B27 ΔE 0.039
- Khaki Green #728639 ΔE 0.040
Use #558F51 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.