#40D396
Closest named color: Emerald (#06D6A0). oklch(77.5% 0.152 161.2), rgb(64, 211, 150).
Aa
Black text reads best on this color (10.97:1).
About this color
#40D396 is a medium-light, vivid green. In OKLCH its lightness is 77%, its chroma 0.152 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Emerald (#06D6A0), ΔE 0.017 away. Black text reads best on it, at 10.97:1.
| Hue family | Greens |
| Lightness | medium-light (77%) |
| Chroma | vivid (0.152) |
| Temperature | in between |
| Nearest name | Emerald (#06D6A0) |
| Black text | 10.97:1 |
| White text | 1.91:1 |
Values
| HEX | #40D396 |
| RGB | rgb(64, 211, 150) |
| HSL | hsl(155, 63%, 54%) |
| OKLCH | oklch(77.5% 0.152 161.2) |
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 #40D396 | 1.91:1 | Fails | Lc -40.4 | Non-text elements, placeholder text |
| Black text on #40D396 | 10.97:1 | AAA | Lc 67.8 | Content text, not long reading |
| #40D396 text on white | 1.91:1 | Fails | Lc 36.1 | Non-text elements, placeholder text |
| #40D396 text on black | 10.97:1 | AAA | Lc -66.4 | Content text, not long reading |
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 300.
-
Step 50
50
#EAFAF1
oklch(97.1% 0.021 161.5)
-
Step 100
100
#D1F4E1
oklch(93.7% 0.044 161.7)
-
Step 200
200
#A7EBC7
oklch(88.5% 0.085 160.9)
-
Step 300
300 (this color)
#40D396
oklch(77.5% 0.152 161.2)
-
Step 400
400
#00BE80
oklch(70.8% 0.158 161)
-
Step 500
500
#00A36D
oklch(63.2% 0.141 160.9)
-
Step 600
600
#00895B
oklch(55.6% 0.124 161)
-
Step 700
700
#00734C
oklch(49.1% 0.109 161.2)
-
Step 800
800
#005E3E
oklch(42.6% 0.094 161.6)
-
Step 900
900
#004F33
oklch(37.8% 0.084 161.3)
-
Step 950
950
#002F1D
oklch(27% 0.059 161.7)
#40D396 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) | #D0C392 | 0.145 |
| Deuteranopia (no green cones) | #BDB69A | 0.140 |
| Tritanopia (no blue cones) | #00D2C3 | 0.063 |
| Achromatopsia (no color) | #BBBBBB | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40D396
#40D396
oklch(77.5% 0.152 161.2)
- #F68CD2
#F68CD2
oklch(77.4% 0.153 341.3)
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 #40D396, closest first.
No curated palette has a color within ΔE 0.04 of #40D396.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald #06D6A0 ΔE 0.017
- Seaweed #18D17B ΔE 0.039
- Aqua Green #12E193 ΔE 0.042
- Medium Aquamarine #66CDAA ΔE 0.046
- Greenblue #23C48B ΔE 0.046
- Soft Green #6FC276 ΔE 0.053
- Dark Mint #48C072 ΔE 0.059
- Green Blue #01C08D ΔE 0.060
Use #40D396 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.