#338C0A
Closest named color: Forest Green (#228B22). oklch(56.4% 0.174 139.1), rgb(51, 140, 10).
Aa
Black text reads best on this color (4.89:1).
About this color
#338C0A is a medium-dark, vivid green. In OKLCH its lightness is 56%, its chroma 0.174 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest Green (#228B22), ΔE 0.014 away. Black text reads best on it, at 4.89:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.174) |
| Temperature | in between |
| Nearest name | Forest Green (#228B22) |
| Black text | 4.89:1 |
| White text | 4.28:1 |
Values
| HEX | #338C0A |
| RGB | rgb(51, 140, 10) |
| HSL | hsl(101, 87%, 29%) |
| OKLCH | oklch(56.4% 0.174 139.1) |
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 #338C0A | 4.28:1 | AA large text | Lc -74.7 | Content text, not long reading |
| Black text on #338C0A | 4.89:1 | AA | Lc 34.9 | Non-text elements, placeholder text |
| #338C0A text on white | 4.28:1 | AA large text | Lc 69.2 | Content text, not long reading |
| #338C0A text on black | 4.89:1 | AA | Lc -32.4 | 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
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E2EEDF
oklch(93.6% 0.024 139.4)
-
Step 200
200
#CBE1C5
oklch(88.6% 0.044 139)
-
Step 300
300
#A7CD9D
oklch(80.8% 0.078 139.2)
-
Step 400
400
#76B366
oklch(70.6% 0.125 139.3)
-
Step 500
500
#509F37
oklch(63% 0.16 139)
-
Step 600
600 (this color)
#338C0A
oklch(56.4% 0.174 139.1)
-
Step 700
700
#267400
oklch(49.1% 0.155 139.2)
-
Step 800
800
#1F5F01
oklch(42.7% 0.134 139)
-
Step 900
900
#1F4E10
oklch(37.7% 0.105 139.3)
-
Step 950
950
#132E0B
oklch(27% 0.067 139.2)
#338C0A 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) | #907E00 | 0.115 |
| Deuteranopia (no green cones) | #86771F | 0.115 |
| Tritanopia (no blue cones) | #288776 | 0.119 |
| Achromatopsia (no color) | #7A7A7A | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #338C0A
#338C0A
oklch(56.4% 0.174 139.1)
- #A04CB5
#A04CB5
oklch(56.4% 0.175 319.2)
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 #338C0A, closest first.
No curated palette has a color within ΔE 0.04 of #338C0A.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest Green #228B22 ΔE 0.014
- Emerald Green #028F1E ΔE 0.017
- True Green #089404 ΔE 0.027
- Irish Green #019529 ΔE 0.028
- Kelley Green #009337 ΔE 0.029
- Dark Grass Green #388004 ΔE 0.035
- Sap Green #5C8B15 ΔE 0.040
- Green #008000 ΔE 0.046
Use #338C0A 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.