#64D199
Closest named color: Medium Aquamarine (#66CDAA). oklch(78.1% 0.13 158.8), rgb(100, 209, 153).
Aa
Black text reads best on this color (11.12:1).
About this color
#64D199 is a light, moderately saturated green. In OKLCH its lightness is 78%, its chroma 0.130 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.029 away. Black text reads best on it, at 11.12:1.
| Hue family | Greens |
| Lightness | light (78%) |
| Chroma | moderately saturated (0.130) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 11.12:1 |
| White text | 1.88:1 |
Values
| HEX | #64D199 |
| RGB | rgb(100, 209, 153) |
| HSL | hsl(149, 54%, 61%) |
| OKLCH | oklch(78.1% 0.13 158.8) |
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 #64D199 | 1.88:1 | Fails | Lc -39.9 | Non-text elements, placeholder text |
| Black text on #64D199 | 11.12:1 | AAA | Lc 68.3 | Content text, not long reading |
| #64D199 text on white | 1.88:1 | Fails | Lc 35.6 | Non-text elements, placeholder text |
| #64D199 text on black | 11.12:1 | AAA | Lc -66.9 | 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
#ECF9F1
oklch(97% 0.017 159.1)
-
Step 100
100
#D6F2E1
oklch(93.6% 0.037 159)
-
Step 200
200
#B1E8C8
oklch(88.4% 0.072 159)
-
Step 300
300 (this color)
#64D199
oklch(78.1% 0.13 158.8)
-
Step 400
400
#00BE7A
oklch(70.7% 0.163 158.9)
-
Step 500
500
#00A368
oklch(63.1% 0.145 158.9)
-
Step 600
600
#008957
oklch(55.5% 0.128 159.1)
-
Step 700
700
#007348
oklch(49% 0.113 158.9)
-
Step 800
800
#005F3A
oklch(42.8% 0.099 158.5)
-
Step 900
900
#004F30
oklch(37.7% 0.087 158.9)
-
Step 950
950
#002F1B
oklch(26.9% 0.062 159.3)
#64D199 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) | #CFC396 | 0.122 |
| Deuteranopia (no green cones) | #BFB89C | 0.118 |
| Tritanopia (no blue cones) | #42D0C2 | 0.059 |
| Achromatopsia (no color) | #BDBDBD | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64D199
#64D199
oklch(78.1% 0.13 158.8)
- #EE96D4
#EE96D4
oklch(78.1% 0.13 338.6)
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 #64D199, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.029
- Emerald #06D6A0 ΔE 0.036
- Seafoam Blue #78D1B6 ΔE 0.046
- Soft Green #6FC276 ΔE 0.050
- Pale Teal #82CBB2 ΔE 0.053
- Aqua Green #12E193 ΔE 0.056
- Greenblue #23C48B ΔE 0.057
- Seaweed #18D17B ΔE 0.059
Use #64D199 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.