#40CD88
Closest named color: Seaweed (#18D17B). oklch(75.7% 0.156 157.5), rgb(64, 205, 136).
Aa
Black text reads best on this color (10.30:1).
About this color
#40CD88 is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.156 and its hue 157°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed (#18D17B), ΔE 0.027 away. Black text reads best on it, at 10.30:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 10.30:1 |
| White text | 2.03:1 |
Values
| HEX | #40CD88 |
| RGB | rgb(64, 205, 136) |
| HSL | hsl(151, 59%, 53%) |
| OKLCH | oklch(75.7% 0.156 157.5) |
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 #40CD88 | 2.03:1 | Fails | Lc -43.7 | Non-text elements, placeholder text |
| Black text on #40CD88 | 10.30:1 | AAA | Lc 64.7 | Content text, not long reading |
| #40CD88 text on white | 2.03:1 | Fails | Lc 39.2 | Non-text elements, placeholder text |
| #40CD88 text on black | 10.30:1 | AAA | Lc -63.1 | 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
#DBF0E3
oklch(93.6% 0.028 158.7)
-
Step 200
200
#BCE5CB
oklch(88.6% 0.056 157.2)
-
Step 300
300
#89D4A8
oklch(80.9% 0.098 157.6)
-
Step 400
400 (this color)
#40CD88
oklch(75.7% 0.156 157.5)
-
Step 500
500
#00A365
oklch(63% 0.148 157.8)
-
Step 600
600
#008954
oklch(55.5% 0.13 157.7)
-
Step 700
700
#007446
oklch(49.2% 0.116 157.5)
-
Step 800
800
#005F38
oklch(42.7% 0.101 157.3)
-
Step 900
900
#004F2E
oklch(37.6% 0.089 157.5)
-
Step 950
950
#002F1A
oklch(26.9% 0.063 158.2)
#40CD88 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) | #CBBD84 | 0.143 |
| Deuteranopia (no green cones) | #BAB08C | 0.141 |
| Tritanopia (no blue cones) | #00CCBB | 0.071 |
| Achromatopsia (no color) | #B6B6B6 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40CD88
#40CD88
oklch(75.7% 0.156 157.5)
- #EE86D3
#EE86D3
oklch(75.6% 0.157 337.5)
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 #40CD88, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed #18D17B ΔE 0.027
- Greenblue #23C48B ΔE 0.032
- Emerald #06D6A0 ΔE 0.033
- Dark Mint #48C072 ΔE 0.039
- Soft Green #6FC276 ΔE 0.039
- Algae Green #21C36F ΔE 0.042
- Dark Mint Green #20C073 ΔE 0.045
- Green Blue #01C08D ΔE 0.046
Use #40CD88 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.