#40CD8E
Closest named color: Emerald (#06D6A0). oklch(75.8% 0.151 159.7), rgb(64, 205, 142).
Aa
Black text reads best on this color (10.34:1).
About this color
#40CD8E is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.151 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Emerald (#06D6A0), ΔE 0.028 away. Black text reads best on it, at 10.34:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Emerald (#06D6A0) |
| Black text | 10.34:1 |
| White text | 2.03:1 |
Values
| HEX | #40CD8E |
| RGB | rgb(64, 205, 142) |
| HSL | hsl(153, 59%, 53%) |
| OKLCH | oklch(75.8% 0.151 159.7) |
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 #40CD8E | 2.03:1 | Fails | Lc -43.6 | Non-text elements, placeholder text |
| Black text on #40CD8E | 10.34:1 | AAA | Lc 64.8 | Content text, not long reading |
| #40CD8E text on white | 2.03:1 | Fails | Lc 39.1 | Non-text elements, placeholder text |
| #40CD8E text on black | 10.34:1 | AAA | Lc -63.3 | 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 400.
-
Step 50
50
#EFF8F2
oklch(97.1% 0.012 157)
-
Step 100
100
#DBF0E4
oklch(93.6% 0.027 160.9)
-
Step 200
200
#BCE4CD
oklch(88.4% 0.052 159.9)
-
Step 300
300
#89D4AB
oklch(81% 0.095 159.4)
-
Step 400
400 (this color)
#40CD8E
oklch(75.8% 0.151 159.7)
-
Step 500
500
#00A36A
oklch(63.1% 0.143 159.7)
-
Step 600
600
#008958
oklch(55.6% 0.127 159.5)
-
Step 700
700
#00734A
oklch(49% 0.111 160)
-
Step 800
800
#005F3C
oklch(42.8% 0.097 159.8)
-
Step 900
900
#004F31
oklch(37.7% 0.086 159.7)
-
Step 950
950
#002F1B
oklch(26.9% 0.062 159.3)
#40CD8E 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) | #CBBE8A | 0.142 |
| Deuteranopia (no green cones) | #B9B192 | 0.138 |
| Tritanopia (no blue cones) | #00CCBC | 0.065 |
| Achromatopsia (no color) | #B6B6B6 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40CD8E
#40CD8E
oklch(75.8% 0.151 159.7)
- #EE88CF
#EE88CF
oklch(75.8% 0.15 339.5)
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 #40CD8E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald #06D6A0 ΔE 0.028
- Greenblue #23C48B ΔE 0.030
- Seaweed #18D17B ΔE 0.034
- Soft Green #6FC276 ΔE 0.041
- Dark Mint #48C072 ΔE 0.042
- Green Blue #01C08D ΔE 0.045
- Algae Green #21C36F ΔE 0.048
- Dark Mint Green #20C073 ΔE 0.049
Use #40CD8E 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.