#4CB309
Closest named color: Leafy Green (#51B73B). oklch(67.8% 0.206 137.8), rgb(76, 179, 9).
Aa
Black text reads best on this color (7.75:1).
About this color
#4CB309 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.206 and its hue 138°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leafy Green (#51B73B), ΔE 0.026 away. Black text reads best on it, at 7.75:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.206) |
| Temperature | in between |
| Nearest name | Leafy Green (#51B73B) |
| Black text | 7.75:1 |
| White text | 2.70:1 |
Values
| HEX | #4CB309 |
| RGB | rgb(76, 179, 9) |
| HSL | hsl(96, 90%, 37%) |
| OKLCH | oklch(67.8% 0.206 137.8) |
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 #4CB309 | 2.70:1 | Fails | Lc -57.2 | Large or bold text, headings |
| Black text on #4CB309 | 7.75:1 | AAA | Lc 52.0 | Large or bold text, headings |
| #4CB309 text on white | 2.70:1 | Fails | Lc 52.0 | Large or bold text, headings |
| #4CB309 text on black | 7.75:1 | AAA | Lc -49.9 | Large or bold text, headings |
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 400.
-
Step 50
50
#F0F8ED
oklch(97% 0.017 137)
-
Step 100
100
#DEF0D8
oklch(93.5% 0.037 137.8)
-
Step 200
200
#C3E5B7
oklch(88.5% 0.071 137.6)
-
Step 300
300
#97D481
oklch(80.8% 0.128 137.7)
-
Step 400
400 (this color)
#4CB309
oklch(67.8% 0.206 137.8)
-
Step 500
500
#43A300
oklch(63.2% 0.195 137.9)
-
Step 600
600
#378900
oklch(55.7% 0.172 137.9)
-
Step 700
700
#2D7300
oklch(49.1% 0.151 137.9)
-
Step 800
800
#245E00
oklch(42.6% 0.131 137.7)
-
Step 900
900
#1D4F00
oklch(37.8% 0.116 137.7)
-
Step 950
950
#0E2F00
oklch(27% 0.083 137.8)
#4CB309 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) | #B9A200 | 0.134 |
| Deuteranopia (no green cones) | #AC9A28 | 0.132 |
| Tritanopia (no blue cones) | #43AC98 | 0.145 |
| Achromatopsia (no color) | #9D9D9D | 0.207 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4CB309
#4CB309
oklch(67.8% 0.206 137.8)
- #CA65E9
#CA65E9
oklch(67.8% 0.207 317.6)
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 #4CB309, closest first.
No curated palette has a color within ΔE 0.04 of #4CB309.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leafy Green #51B73B ΔE 0.026
- Frog Green #58BC08 ΔE 0.029
- Leaf Green #5CA904 ΔE 0.029
- Grass #5CAC2D ΔE 0.031
- Shamrock #01B44C ΔE 0.041
- Kelly Green #02AB2E ΔE 0.043
- Medium Green #39AD48 ΔE 0.044
- Shamrock Green #02C14D ΔE 0.046
Use #4CB309 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.