#64CB99
Closest named color: Medium Aquamarine (#66CDAA). oklch(76.7% 0.122 160.4), rgb(100, 203, 153).
Aa
Black text reads best on this color (10.54:1).
About this color
#64CB99 is a medium-light, moderately saturated green. In OKLCH its lightness is 77%, its chroma 0.122 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.023 away. Black text reads best on it, at 10.54:1.
| Hue family | Greens |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.122) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.54:1 |
| White text | 1.99:1 |
Values
| HEX | #64CB99 |
| RGB | rgb(100, 203, 153) |
| HSL | hsl(151, 50%, 59%) |
| OKLCH | oklch(76.7% 0.122 160.4) |
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 #64CB99 | 1.99:1 | Fails | Lc -42.7 | Non-text elements, placeholder text |
| Black text on #64CB99 | 10.54:1 | AAA | Lc 65.6 | Content text, not long reading |
| #64CB99 text on white | 1.99:1 | Fails | Lc 38.3 | Non-text elements, placeholder text |
| #64CB99 text on black | 10.54:1 | AAA | Lc -64.1 | 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 300.
-
Step 50
50
#EDF9F2
oklch(97.1% 0.016 160.6)
-
Step 100
100
#D7F2E2
oklch(93.7% 0.035 159.7)
-
Step 200
200
#B3E8CA
oklch(88.6% 0.068 159.8)
-
Step 300
300 (this color)
#64CB99
oklch(76.7% 0.122 160.4)
-
Step 400
400
#00BE7E
oklch(70.7% 0.159 160.3)
-
Step 500
500
#00A36C
oklch(63.2% 0.142 160.5)
-
Step 600
600
#00895A
oklch(55.6% 0.125 160.5)
-
Step 700
700
#00734B
oklch(49% 0.11 160.6)
-
Step 800
800
#005F3D
oklch(42.9% 0.096 160.4)
-
Step 900
900
#004F32
oklch(37.7% 0.085 160.4)
-
Step 950
950
#002F1C
oklch(26.9% 0.06 160.5)
#64CB99 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) | #C9BE96 | 0.116 |
| Deuteranopia (no green cones) | #BAB39C | 0.113 |
| Tritanopia (no blue cones) | #44CABD | 0.053 |
| Achromatopsia (no color) | #B8B8B8 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64CB99
#64CB99
oklch(76.7% 0.122 160.4)
- #E794CB
#E794CB
oklch(76.7% 0.121 340.4)
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 #64CB99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.023
- Emerald #06D6A0 ΔE 0.042
- Soft Green #6FC276 ΔE 0.043
- Seafoam Blue #78D1B6 ΔE 0.046
- Pale Teal #82CBB2 ΔE 0.048
- Greenblue #23C48B ΔE 0.048
- Dark Sea Green #8FBC8F ΔE 0.052
- Green Blue #01C08D ΔE 0.059
Use #64CB99 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.