#538C20
Closest named color: Sap Green (#5C8B15). oklch(57.9% 0.149 133.8), rgb(83, 140, 32).
Aa
Black text reads best on this color (5.13:1).
About this color
#538C20 is a medium-dark, vivid green. In OKLCH its lightness is 58%, its chroma 0.149 and its hue 134°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sap Green (#5C8B15), ΔE 0.010 away. Black text reads best on it, at 5.13:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Sap Green (#5C8B15) |
| Black text | 5.13:1 |
| White text | 4.08:1 |
Values
| HEX | #538C20 |
| RGB | rgb(83, 140, 32) |
| HSL | hsl(92, 63%, 34%) |
| OKLCH | oklch(57.9% 0.149 133.8) |
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 #538C20 | 4.08:1 | AA large text | Lc -73.3 | Content text, not long reading |
| Black text on #538C20 | 5.13:1 | AA | Lc 36.3 | Non-text elements, placeholder text |
| #538C20 text on white | 4.08:1 | AA large text | Lc 67.8 | Content text, not long reading |
| #538C20 text on black | 5.13:1 | AA | Lc -33.9 | 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
#F3F7F1
oklch(97.1% 0.009 134.9)
-
Step 100
100
#E5EDE0
oklch(93.6% 0.019 133.1)
-
Step 200
200
#CFDFC6
oklch(88.5% 0.038 134.1)
-
Step 300
300
#AFCB9F
oklch(81% 0.067 134.3)
-
Step 400
400
#85AF69
oklch(70.6% 0.107 133.7)
-
Step 500
500
#669B3E
oklch(63.2% 0.137 133.8)
-
Step 600
600 (this color)
#538C20
oklch(57.9% 0.149 133.8)
-
Step 700
700
#3D7003
oklch(49% 0.139 133.7)
-
Step 800
800
#335C0B
oklch(42.8% 0.115 133.8)
-
Step 900
900
#2D4B14
oklch(37.6% 0.089 133.6)
-
Step 950
950
#1B2C0D
oklch(27% 0.056 133)
#538C20 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) | #928007 | 0.087 |
| Deuteranopia (no green cones) | #8A7C2B | 0.087 |
| Tritanopia (no blue cones) | #538677 | 0.110 |
| Achromatopsia (no color) | #7E7E7E | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #538C20
#538C20
oklch(57.9% 0.149 133.8)
- #995BB7
#995BB7
oklch(57.8% 0.149 313.7)
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 #538C20, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sap Green #5C8B15 ΔE 0.010
- Mossy Green #638B27 ΔE 0.020
- Olive Drab #6B8E23 ΔE 0.030
- Fern Green #548D44 ΔE 0.032
- Moss Green #658B38 ΔE 0.032
- Forest Green #228B22 ΔE 0.038
- Dark Yellow Green #728F02 ΔE 0.039
- Swamp Green #748500 ΔE 0.041
Use #538C20 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.