#4FB751
Closest named color: Leafy Green (#51B73B). oklch(69.5% 0.171 143.8), rgb(79, 183, 81).
Aa
Black text reads best on this color (8.22:1).
About this color
#4FB751 is a medium-light, vivid green. In OKLCH its lightness is 70%, its chroma 0.171 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leafy Green (#51B73B), ΔE 0.020 away. Black text reads best on it, at 8.22:1.
| Hue family | Greens |
| Lightness | medium-light (70%) |
| Chroma | vivid (0.171) |
| Temperature | in between |
| Nearest name | Leafy Green (#51B73B) |
| Black text | 8.22:1 |
| White text | 2.55:1 |
Values
| HEX | #4FB751 |
| RGB | rgb(79, 183, 81) |
| HSL | hsl(121, 42%, 51%) |
| OKLCH | oklch(69.5% 0.171 143.8) |
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 #4FB751 | 2.55:1 | Fails | Lc -54.8 | Large or bold text, headings |
| Black text on #4FB751 | 8.22:1 | AAA | Lc 54.3 | Large or bold text, headings |
| #4FB751 text on white | 2.55:1 | Fails | Lc 49.7 | Large or bold text, headings |
| #4FB751 text on black | 8.22:1 | AAA | Lc -52.3 | 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
#F0F8EF
oklch(97.1% 0.015 142.2)
-
Step 100
100
#DEF0DD
oklch(93.7% 0.032 143.9)
-
Step 200
200
#C2E4C1
oklch(88.5% 0.059 144.3)
-
Step 300
300
#96D394
oklch(80.9% 0.107 143.8)
-
Step 400
400 (this color)
#4FB751
oklch(69.5% 0.171 143.8)
-
Step 500
500
#00A71F
oklch(63.2% 0.206 143.8)
-
Step 600
600
#008C18
oklch(55.5% 0.181 143.8)
-
Step 700
700
#007613
oklch(49.1% 0.16 143.8)
-
Step 800
800
#00610D
oklch(42.7% 0.14 143.7)
-
Step 900
900
#005109
oklch(37.7% 0.123 143.7)
-
Step 950
950
#003003
oklch(26.8% 0.088 143.6)
#4FB751 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) | #BAA847 | 0.125 |
| Deuteranopia (no green cones) | #AD9E59 | 0.127 |
| Tritanopia (no blue cones) | #3DB2A0 | 0.107 |
| Achromatopsia (no color) | #A2A2A2 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4FB751
#4FB751
oklch(69.5% 0.171 143.8)
- #CF74D8
#CF74D8
oklch(69.6% 0.17 323.8)
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 #4FB751, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leafy Green #51B73B ΔE 0.020
- Cool Green #33B864 ΔE 0.022
- Dark Pastel Green #56AE57 ΔE 0.029
- Turtle Green #75B84F ΔE 0.034
- Shamrock #01B44C ΔE 0.034
- Boring Green #63B365 ΔE 0.034
- Medium Green #39AD48 ΔE 0.035
- Grass #5CAC2D ΔE 0.035
Use #4FB751 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.