#40AF5B
Closest named color: Dark Pastel Green (#56AE57). oklch(67.1% 0.158 148.4), rgb(64, 175, 91).
Aa
Black text reads best on this color (7.50:1).
About this color
#40AF5B is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.158 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Pastel Green (#56AE57), ΔE 0.015 away. Black text reads best on it, at 7.50:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.158) |
| Temperature | in between |
| Nearest name | Dark Pastel Green (#56AE57) |
| Black text | 7.50:1 |
| White text | 2.79:1 |
Values
| HEX | #40AF5B |
| RGB | rgb(64, 175, 91) |
| HSL | hsl(135, 46%, 47%) |
| OKLCH | oklch(67.1% 0.158 148.4) |
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 #40AF5B | 2.79:1 | Fails | Lc -58.8 | Large or bold text, headings |
| Black text on #40AF5B | 7.50:1 | AAA | Lc 50.5 | Large or bold text, headings |
| #40AF5B text on white | 2.79:1 | Fails | Lc 53.5 | Large or bold text, headings |
| #40AF5B text on black | 7.50:1 | AAA | Lc -48.3 | 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
#F0F8F1
oklch(97.1% 0.013 149.3)
-
Step 100
100
#DEF0E0
oklch(93.7% 0.029 148.6)
-
Step 200
200
#C1E4C5
oklch(88.5% 0.056 148.3)
-
Step 300
300
#94D39D
oklch(81% 0.099 148.3)
-
Step 400
400 (this color)
#40AF5B
oklch(67.1% 0.158 148.4)
-
Step 500
500
#00A544
oklch(63% 0.18 148.5)
-
Step 600
600
#008B38
oklch(55.6% 0.159 148.5)
-
Step 700
700
#00752E
oklch(49.1% 0.14 148.5)
-
Step 800
800
#006024
oklch(42.7% 0.122 148.4)
-
Step 900
900
#00501D
oklch(37.6% 0.108 148.5)
-
Step 950
950
#00300E
oklch(27% 0.077 148.3)
#40AF5B 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) | #B1A054 | 0.128 |
| Deuteranopia (no green cones) | #A39761 | 0.125 |
| Tritanopia (no blue cones) | #1EAC9B | 0.089 |
| Achromatopsia (no color) | #9A9A9A | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40AF5B
#40AF5B
oklch(67.1% 0.158 148.4)
- #C86EC5
#C86EC5
oklch(67% 0.158 328.4)
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 #40AF5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Pastel Green #56AE57 ΔE 0.015
- Jade Green #2BAF6A ΔE 0.019
- Medium Green #39AD48 ΔE 0.022
- Seaweed Green #35AD6B ΔE 0.022
- Cool Green #33B864 ΔE 0.025
- Mid Green #50A747 ΔE 0.026
- Medium Sea Green #3CB371 ΔE 0.026
- Algae #54AC68 ΔE 0.026
Use #40AF5B 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.