#558138
Closest named color: Swamp (#698339). oklch(55.4% 0.114 134.5), rgb(85, 129, 56).
Aa
Black text reads best on this color (4.58:1).
About this color
#558138 is a medium-dark, moderately saturated green. In OKLCH its lightness is 55%, its chroma 0.114 and its hue 135°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Swamp (#698339), ΔE 0.027 away. Black text reads best on it, at 4.58:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.114) |
| Temperature | in between |
| Nearest name | Swamp (#698339) |
| Black text | 4.58:1 |
| White text | 4.58:1 |
Values
| HEX | #558138 |
| RGB | rgb(85, 129, 56) |
| HSL | hsl(96, 39%, 36%) |
| OKLCH | oklch(55.4% 0.114 134.5) |
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 #558138 | 4.58:1 | AA | Lc -77.2 | Fine for body text |
| Black text on #558138 | 4.58:1 | AA | Lc 32.4 | Non-text elements, placeholder text |
| #558138 text on white | 4.58:1 | AA | Lc 71.7 | Content text, not long reading |
| #558138 text on black | 4.58:1 | AA | Lc -30.0 | Dividers and decoration only |
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
#F3F6F2
oklch(97% 0.006 137.8)
-
Step 100
100
#E6ECE2
oklch(93.6% 0.015 132.5)
-
Step 200
200
#D1DECB
oklch(88.6% 0.029 135.6)
-
Step 300
300
#B3C8A7
oklch(80.8% 0.051 134.1)
-
Step 400
400
#8BAC78
oklch(70.6% 0.082 134.5)
-
Step 500
500
#6E9755
oklch(63% 0.104 134.5)
-
Step 600
600 (this color)
#558138
oklch(55.4% 0.114 134.5)
-
Step 700
700
#466E2B
oklch(49.3% 0.107 134.5)
-
Step 800
800
#3A5925
oklch(42.7% 0.087 134.3)
-
Step 900
900
#324923
oklch(37.6% 0.067 134.2)
-
Step 950
950
#1D2B15
oklch(27% 0.043 134.9)
#558138 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) | #867831 | 0.070 |
| Deuteranopia (no green cones) | #7F743D | 0.069 |
| Tritanopia (no blue cones) | #557C71 | 0.084 |
| Achromatopsia (no color) | #757575 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #558138
#558138
oklch(55.4% 0.114 134.5)
- #8B5DA1
#8B5DA1
oklch(55.4% 0.114 314.2)
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 #558138, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Swamp #698339 ΔE 0.027
- Military Green #667C3E ΔE 0.028
- Fern Green #548D44 ΔE 0.034
- Olive Green #677A04 ΔE 0.035
- Murky Green #6C7A0E ΔE 0.036
- Dark Sage #598556 ΔE 0.037
- Moss Green #658B38 ΔE 0.038
- Muddy Green #657432 ΔE 0.040
Use #558138 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.