#40B04B
Closest named color: Medium Green (#39AD48). oklch(67.1% 0.173 145), rgb(64, 176, 75).
Aa
Black text reads best on this color (7.52:1).
About this color
#40B04B is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.173 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.011 away. Black text reads best on it, at 7.52:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.173) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 7.52:1 |
| White text | 2.78:1 |
Values
| HEX | #40B04B |
| RGB | rgb(64, 176, 75) |
| HSL | hsl(126, 47%, 47%) |
| OKLCH | oklch(67.1% 0.173 145) |
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 #40B04B | 2.78:1 | Fails | Lc -58.6 | Large or bold text, headings |
| Black text on #40B04B | 7.52:1 | AAA | Lc 50.7 | Large or bold text, headings |
| #40B04B text on white | 2.78:1 | Fails | Lc 53.3 | Large or bold text, headings |
| #40B04B text on black | 7.52:1 | AAA | Lc -48.5 | 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
#F0F8F0
oklch(97.1% 0.014 145.5)
-
Step 100
100
#DEF0DD
oklch(93.7% 0.032 143.9)
-
Step 200
200
#C1E4C1
oklch(88.4% 0.06 145)
-
Step 300
300
#94D395
oklch(80.8% 0.108 144.9)
-
Step 400
400 (this color)
#40B04B
oklch(67.1% 0.173 145)
-
Step 500
500
#00A62C
oklch(63% 0.198 145)
-
Step 600
600
#008C23
oklch(55.6% 0.175 144.9)
-
Step 700
700
#00761C
oklch(49.2% 0.155 144.9)
-
Step 800
800
#006116
oklch(42.8% 0.135 145)
-
Step 900
900
#005110
oklch(37.8% 0.119 144.9)
-
Step 950
950
#003006
oklch(26.9% 0.085 144.8)
#40B04B 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) | #B3A141 | 0.130 |
| Deuteranopia (no green cones) | #A59753 | 0.130 |
| Tritanopia (no blue cones) | #25AC9A | 0.106 |
| Achromatopsia (no color) | #9B9B9B | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40B04B
#40B04B
oklch(67.1% 0.173 145)
- #C96BCF
#C96BCF
oklch(67.1% 0.173 325)
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 #40B04B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.011
- Shamrock #01B44C ΔE 0.021
- Dark Pastel Green #56AE57 ΔE 0.024
- Mid Green #50A747 ΔE 0.026
- Grass #5CAC2D ΔE 0.026
- Cool Green #33B864 ΔE 0.029
- Leafy Green #51B73B ΔE 0.030
- Fern #63A950 ΔE 0.035
Use #40B04B 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.