#64D591
Closest named color: Emerald (#06D6A0). oklch(78.9% 0.143 154.8), rgb(100, 213, 145).
Aa
Black text reads best on this color (11.46:1).
About this color
#64D591 is a light, vivid green. In OKLCH its lightness is 79%, its chroma 0.143 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Emerald (#06D6A0), ΔE 0.037 away. Black text reads best on it, at 11.46:1.
| Hue family | Greens |
| Lightness | light (79%) |
| Chroma | vivid (0.143) |
| Temperature | in between |
| Nearest name | Emerald (#06D6A0) |
| Black text | 11.46:1 |
| White text | 1.83:1 |
Values
| HEX | #64D591 |
| RGB | rgb(100, 213, 145) |
| HSL | hsl(144, 57%, 61%) |
| OKLCH | oklch(78.9% 0.143 154.8) |
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 #64D591 | 1.83:1 | Fails | Lc -38.1 | Non-text elements, placeholder text |
| Black text on #64D591 | 11.46:1 | AAA | Lc 69.8 | Content text, not long reading |
| #64D591 text on white | 1.83:1 | Fails | Lc 34.0 | Non-text elements, placeholder text |
| #64D591 text on black | 11.46:1 | AAA | Lc -68.6 | 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
#ECFAF0
oklch(97.2% 0.02 154.9)
-
Step 100
100
#D5F3DE
oklch(93.7% 0.042 155)
-
Step 200
200
#B0E9C2
oklch(88.4% 0.079 154.6)
-
Step 300
300 (this color)
#64D591
oklch(78.9% 0.143 154.8)
-
Step 400
400
#00BF6D
oklch(70.7% 0.176 154.8)
-
Step 500
500
#00A45D
oklch(63.1% 0.157 154.8)
-
Step 600
600
#008A4D
oklch(55.6% 0.138 154.7)
-
Step 700
700
#007440
oklch(49.1% 0.122 154.8)
-
Step 800
800
#005F34
oklch(42.6% 0.105 155.1)
-
Step 900
900
#004F2A
oklch(37.6% 0.093 154.9)
-
Step 950
950
#003017
oklch(27.1% 0.068 154.6)
#64D591 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) | #D4C68D | 0.127 |
| Deuteranopia (no green cones) | #C4BB95 | 0.124 |
| Tritanopia (no blue cones) | #44D3C3 | 0.070 |
| Achromatopsia (no color) | #BFBFBF | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64D591
#64D591
oklch(78.9% 0.143 154.8)
- #F296DF
#F296DF
oklch(79% 0.142 334.8)
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 #64D591, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald #06D6A0 ΔE 0.037
- Aqua Green #12E193 ΔE 0.043
- Medium Aquamarine #66CDAA ΔE 0.047
- Seaweed #18D17B ΔE 0.051
- Soft Green #6FC276 ΔE 0.053
- Seafoam Blue #78D1B6 ΔE 0.060
- Weird Green #3AE57F ΔE 0.060
- Aqua Marine #2EE8BB ΔE 0.062
Use #64D591 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.