#40AE57
Closest named color: Dark Pastel Green (#56AE57). oklch(66.7% 0.16 147.5), rgb(64, 174, 87).
Aa
Black text reads best on this color (7.41:1).
About this color
#40AE57 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.160 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 0.016 away. Black text reads best on it, at 7.41:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Dark Pastel Green (#56AE57) |
| Black text | 7.41:1 |
| White text | 2.83:1 |
Values
| HEX | #40AE57 |
| RGB | rgb(64, 174, 87) |
| HSL | hsl(133, 46%, 47%) |
| OKLCH | oklch(66.7% 0.16 147.5) |
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 #40AE57 | 2.83:1 | Fails | Lc -59.3 | Large or bold text, headings |
| Black text on #40AE57 | 7.41:1 | AAA | Lc 50.0 | Large or bold text, headings |
| #40AE57 text on white | 2.83:1 | Fails | Lc 54.0 | Large or bold text, headings |
| #40AE57 text on black | 7.41:1 | AAA | Lc -47.8 | 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 500.
-
Step 50
50
#F1F7F1
oklch(97% 0.01 145.5)
-
Step 100
100
#E0EEE1
oklch(93.5% 0.023 147.4)
-
Step 200
200
#C7E1C9
oklch(88.4% 0.043 147.4)
-
Step 300
300
#9FCFA4
oklch(80.9% 0.078 147.6)
-
Step 400
400
#67B672
oklch(70.8% 0.126 147.3)
-
Step 500
500 (this color)
#40AE57
oklch(66.7% 0.16 147.5)
-
Step 600
600
#008B34
oklch(55.5% 0.162 147.6)
-
Step 700
700
#00752A
oklch(49% 0.144 147.5)
-
Step 800
800
#006021
oklch(42.6% 0.125 147.5)
-
Step 900
900
#09501D
oklch(37.8% 0.105 147.4)
-
Step 950
950
#0A2F12
oklch(27.1% 0.067 147.5)
#40AE57 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) | #B09F50 | 0.127 |
| Deuteranopia (no green cones) | #A2965D | 0.125 |
| Tritanopia (no blue cones) | #21AA9A | 0.094 |
| Achromatopsia (no color) | #999999 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40AE57
#40AE57
oklch(66.7% 0.16 147.5)
- #C76DC6
#C76DC6
oklch(66.7% 0.16 327.6)
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 #40AE57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Pastel Green #56AE57 ΔE 0.016
- Medium Green #39AD48 ΔE 0.017
- Mid Green #50A747 ΔE 0.022
- Jade Green #2BAF6A ΔE 0.022
- Seaweed Green #35AD6B ΔE 0.025
- Cool Green #33B864 ΔE 0.028
- Fern #63A950 ΔE 0.028
- Algae #54AC68 ΔE 0.029
Use #40AE57 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.