#538D09
Closest named color: Sap Green (#5C8B15). oklch(58.1% 0.16 132.7), rgb(83, 141, 9).
Aa
Black text reads best on this color (5.18:1).
About this color
#538D09 is a medium-dark, vivid green. In OKLCH its lightness is 58%, its chroma 0.160 and its hue 133°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sap Green (#5C8B15), ΔE 0.013 away. Black text reads best on it, at 5.18:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Sap Green (#5C8B15) |
| Black text | 5.18:1 |
| White text | 4.05:1 |
Values
| HEX | #538D09 |
| RGB | rgb(83, 141, 9) |
| HSL | hsl(86, 88%, 29%) |
| OKLCH | oklch(58.1% 0.16 132.7) |
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 #538D09 | 4.05:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #538D09 | 5.18:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #538D09 text on white | 4.05:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #538D09 text on black | 5.18:1 | AA | Lc -34.2 | 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
#F3F7F0
oklch(97.1% 0.01 131.4)
-
Step 100
100
#E5EDDF
oklch(93.6% 0.02 131.5)
-
Step 200
200
#CFDFC4
oklch(88.4% 0.04 132.4)
-
Step 300
300
#AFCB9B
oklch(80.9% 0.072 132.5)
-
Step 400
400
#85B063
oklch(70.8% 0.115 132.5)
-
Step 500
500
#659B33
oklch(63% 0.147 132.7)
-
Step 600
600 (this color)
#538D09
oklch(58.1% 0.16 132.7)
-
Step 700
700
#407000
oklch(49.1% 0.138 132.7)
-
Step 800
800
#335C00
oklch(42.8% 0.12 132.9)
-
Step 900
900
#2D4C0C
oklch(37.8% 0.096 132.5)
-
Step 950
950
#1A2C0A
oklch(26.8% 0.06 132.8)
#538D09 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) | #938100 | 0.090 |
| Deuteranopia (no green cones) | #8C7D1E | 0.090 |
| Tritanopia (no blue cones) | #548777 | 0.120 |
| Achromatopsia (no color) | #7E7E7E | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #538D09
#538D09
oklch(58.1% 0.16 132.7)
- #9B59BD
#9B59BD
oklch(58.1% 0.16 312.9)
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 #538D09, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sap Green #5C8B15 ΔE 0.013
- Mossy Green #638B27 ΔE 0.027
- Olive Drab #6B8E23 ΔE 0.034
- Dark Yellow Green #728F02 ΔE 0.038
- Forest Green #228B22 ΔE 0.038
- Moss Green #658B38 ΔE 0.041
- Grass Green #3F9B0B ΔE 0.042
- Fern Green #548D44 ΔE 0.042
Use #538D09 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.