#518B59
Closest named color: Dark Sage (#598556). oklch(58.3% 0.097 147.4), rgb(81, 139, 89).
Aa
Black text reads best on this color (5.18:1).
About this color
#518B59 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.097 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Sage (#598556), ΔE 0.018 away. Black text reads best on it, at 5.18:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.097) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 5.18:1 |
| White text | 4.04:1 |
Values
| HEX | #518B59 |
| RGB | rgb(81, 139, 89) |
| HSL | hsl(128, 26%, 43%) |
| OKLCH | oklch(58.3% 0.097 147.4) |
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 #518B59 | 4.04:1 | AA large text | Lc -73.1 | Content text, not long reading |
| Black text on #518B59 | 5.18:1 | AA | Lc 36.5 | Non-text elements, placeholder text |
| #518B59 text on white | 4.04:1 | AA large text | Lc 67.6 | Content text, not long reading |
| #518B59 text on black | 5.18:1 | AA | Lc -34.1 | 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 600.
-
Step 50
50
#F3F7F3
oklch(97.2% 0.007 145.5)
-
Step 100
100
#E5ECE5
oklch(93.6% 0.012 145.5)
-
Step 200
200
#CFDED0
oklch(88.5% 0.025 147.3)
-
Step 300
300
#AFC9B1
oklch(81% 0.044 147.3)
-
Step 400
400
#83AD88
oklch(70.7% 0.07 148)
-
Step 500
500
#63986A
oklch(63% 0.089 147.7)
-
Step 600
600 (this color)
#518B59
oklch(58.3% 0.097 147.4)
-
Step 700
700
#3A6F42
oklch(49.2% 0.091 147.4)
-
Step 800
800
#305A36
oklch(42.6% 0.076 147.4)
-
Step 900
900
#2B4A2F
oklch(37.7% 0.059 147.4)
-
Step 950
950
#1A2B1C
oklch(26.9% 0.036 147.4)
#518B59 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) | #8C8256 | 0.078 |
| Deuteranopia (no green cones) | #847C5C | 0.078 |
| Tritanopia (no blue cones) | #48897E | 0.056 |
| Achromatopsia (no color) | #7E7E7E | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #518B59
#518B59
oklch(58.3% 0.097 147.4)
- #9A6699
#9A6699
oklch(58.3% 0.097 327.4)
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 #518B59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.018
- Light Forest Green #4F9153 ΔE 0.022
- Fern Green #548D44 ΔE 0.028
- Sea Green #2E8B57 ΔE 0.029
- Viridian #1E9167 ΔE 0.035
- Slate Green #658D6D ΔE 0.039
- Moss Green #658B38 ΔE 0.040
- Swamp #698339 ΔE 0.040
Use #518B59 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.