#3DCC99
Closest named color: Emerald (#06D6A0). oklch(75.7% 0.142 164.7), rgb(61, 204, 153).
Aa
Black text reads best on this color (10.29:1).
About this color
#3DCC99 is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.142 and its hue 165°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Emerald (#06D6A0), ΔE 0.027 away. Black text reads best on it, at 10.29:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Emerald (#06D6A0) |
| Black text | 10.29:1 |
| White text | 2.03:1 |
Values
| HEX | #3DCC99 |
| RGB | rgb(61, 204, 153) |
| HSL | hsl(159, 58%, 52%) |
| OKLCH | oklch(75.7% 0.142 164.7) |
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 #3DCC99 | 2.03:1 | Fails | Lc -43.8 | Non-text elements, placeholder text |
| Black text on #3DCC99 | 10.29:1 | AAA | Lc 64.6 | Content text, not long reading |
| #3DCC99 text on white | 2.03:1 | Fails | Lc 39.3 | Non-text elements, placeholder text |
| #3DCC99 text on black | 10.29:1 | 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
#BCE4D1
oklch(88.5% 0.049 164.9)
-
Step 300
300
#88D3B2
oklch(80.8% 0.089 164.8)
-
Step 400
400 (this color)
#3DCC99
oklch(75.7% 0.142 164.7)
-
Step 500
500
#00A274
oklch(63.1% 0.134 164.5)
-
Step 600
600
#008861
oklch(55.5% 0.117 164.6)
-
Step 700
700
#007351
oklch(49.2% 0.104 164.3)
-
Step 800
800
#005E42
oklch(42.7% 0.09 164.7)
-
Step 900
900
#004E37
oklch(37.6% 0.079 165.5)
-
Step 950
950
#002F1F
oklch(27% 0.057 164.4)
#3DCC99 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) | #C8BD96 | 0.140 |
| Deuteranopia (no green cones) | #B5B09C | 0.134 |
| Tritanopia (no blue cones) | #00CCBE | 0.052 |
| Achromatopsia (no color) | #B5B5B5 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3DCC99
#3DCC99
oklch(75.7% 0.142 164.7)
- #EF89C5
#EF89C5
oklch(75.7% 0.143 344.8)
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 #3DCC99, closest first.
No curated palette has a color within ΔE 0.04 of #3DCC99.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald #06D6A0 ΔE 0.027
- Greenblue #23C48B ΔE 0.030
- Medium Aquamarine #66CDAA ΔE 0.039
- Green Blue #01C08D ΔE 0.042
- Soft Green #6FC276 ΔE 0.048
- Seaweed #18D17B ΔE 0.049
- Dark Mint #48C072 ΔE 0.051
- Dark Mint Green #20C073 ΔE 0.057
Use #3DCC99 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.