#01D9A1
Closest named color: Emerald (#06D6A0). oklch(78.5% 0.163 166.1), rgb(1, 217, 161).
Aa
Black text reads best on this color (11.44:1).
About this color
#01D9A1 is a light, vivid green. In OKLCH its lightness is 79%, its chroma 0.163 and its hue 166°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Emerald (#06D6A0), ΔE 0.008 away. Black text reads best on it, at 11.44:1.
| Hue family | Greens |
| Lightness | light (79%) |
| Chroma | vivid (0.163) |
| Temperature | in between |
| Nearest name | Emerald (#06D6A0) |
| Black text | 11.44:1 |
| White text | 1.83:1 |
Values
| HEX | #01D9A1 |
| RGB | rgb(1, 217, 161) |
| HSL | hsl(164, 99%, 43%) |
| OKLCH | oklch(78.5% 0.163 166.1) |
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 #01D9A1 | 1.83:1 | Fails | Lc -37.8 | Non-text elements, placeholder text |
| Black text on #01D9A1 | 11.44:1 | AAA | Lc 70.2 | Content text, not long reading |
| #01D9A1 text on white | 1.83:1 | Fails | Lc 33.7 | Non-text elements, placeholder text |
| #01D9A1 text on black | 11.44:1 | AAA | Lc -68.9 | 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
#E9FAF2
oklch(97% 0.021 166.1)
-
Step 100
100
#CDF4E3
oklch(93.5% 0.046 167.1)
-
Step 200
200
#9EEDCC
oklch(88.6% 0.091 166.3)
-
Step 300
300 (this color)
#01D9A1
oklch(78.5% 0.163 166.1)
-
Step 400
400
#00BD8B
oklch(70.8% 0.147 165.8)
-
Step 500
500
#00A277
oklch(63.2% 0.131 166)
-
Step 600
600
#008864
oklch(55.6% 0.115 166.4)
-
Step 700
700
#007253
oklch(49% 0.101 166.2)
-
Step 800
800
#005E44
oklch(42.7% 0.088 166.3)
-
Step 900
900
#004E38
oklch(37.6% 0.078 166.4)
-
Step 950
950
#002F20
oklch(27.1% 0.056 165.8)
#01D9A1 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) | #D4C99E | 0.161 |
| Deuteranopia (no green cones) | #BEB9A5 | 0.156 |
| Tritanopia (no blue cones) | #00DACA | 0.057 |
| Achromatopsia (no color) | #BFBFBF | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01D9A1
#01D9A1
oklch(78.5% 0.163 166.1)
- #FF8DCE
#FF8DCE
oklch(78.5% 0.156 346)
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 #01D9A1, closest first.
No curated palette has a color within ΔE 0.04 of #01D9A1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald #06D6A0 ΔE 0.008
- Aqua Green #12E193 ΔE 0.034
- Seaweed #18D17B ΔE 0.047
- Aqua Marine #2EE8BB ΔE 0.050
- Medium Aquamarine #66CDAA ΔE 0.054
- Greenblue #23C48B ΔE 0.058
- Weird Green #3AE57F ΔE 0.063
- Turquoise #40E0D0 ΔE 0.069
Use #01D9A1 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.