#40CC97
Closest named color: Emerald (#06D6A0). oklch(75.7% 0.142 163.6), rgb(64, 204, 151).
Aa
Black text reads best on this color (10.30:1).
About this color
#40CC97 is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.142 and its hue 164°. 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 10.30:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Emerald (#06D6A0) |
| Black text | 10.30:1 |
| White text | 2.03:1 |
Values
| HEX | #40CC97 |
| RGB | rgb(64, 204, 151) |
| HSL | hsl(157, 58%, 53%) |
| OKLCH | oklch(75.7% 0.142 163.6) |
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 #40CC97 | 2.03:1 | Fails | Lc -43.8 | Non-text elements, placeholder text |
| Black text on #40CC97 | 10.30:1 | AAA | Lc 64.6 | Content text, not long reading |
| #40CC97 text on white | 2.03:1 | Fails | Lc 39.3 | Non-text elements, placeholder text |
| #40CC97 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
#EFF8F3
oklch(97.1% 0.012 162.1)
-
Step 100
100
#DBF0E5
oklch(93.7% 0.027 163.2)
-
Step 200
200
#BCE4D0
oklch(88.5% 0.05 163.6)
-
Step 300
300
#89D3B1
oklch(80.9% 0.089 163.8)
-
Step 400
400 (this color)
#40CC97
oklch(75.7% 0.142 163.6)
-
Step 500
500
#00A272
oklch(63% 0.135 163.5)
-
Step 600
600
#008860
oklch(55.5% 0.118 164)
-
Step 700
700
#007350
oklch(49.2% 0.105 163.6)
-
Step 800
800
#005E41
oklch(42.7% 0.091 163.9)
-
Step 900
900
#004F35
oklch(37.8% 0.082 162.9)
-
Step 950
950
#002F1E
oklch(27% 0.058 163)
#40CC97 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) | #C8BD94 | 0.138 |
| Deuteranopia (no green cones) | #B6B09A | 0.134 |
| Tritanopia (no blue cones) | #00CCBD | 0.053 |
| Achromatopsia (no color) | #B6B6B6 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40CC97
#40CC97
oklch(75.7% 0.142 163.6)
- #EE8AC7
#EE8AC7
oklch(75.8% 0.141 343.6)
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 #40CC97, closest first.
No curated palette has a color within ΔE 0.04 of #40CC97.
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
- Medium Aquamarine #66CDAA ΔE 0.039
- Green Blue #01C08D ΔE 0.042
- Soft Green #6FC276 ΔE 0.046
- Seaweed #18D17B ΔE 0.047
- Dark Mint #48C072 ΔE 0.049
- Dark Mint Green #20C073 ΔE 0.056
Use #40CC97 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.