#78CC99
Closest named color: Medium Aquamarine (#66CDAA). oklch(77.8% 0.111 156.1), rgb(120, 204, 153).
Aa
Black text reads best on this color (10.89:1).
About this color
#78CC99 is a medium-light, moderately saturated green. In OKLCH its lightness is 78%, its chroma 0.111 and its hue 156°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.025 away. Black text reads best on it, at 10.89:1.
| Hue family | Greens |
| Lightness | medium-light (78%) |
| Chroma | moderately saturated (0.111) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.89:1 |
| White text | 1.92:1 |
Values
| HEX | #78CC99 |
| RGB | rgb(120, 204, 153) |
| HSL | hsl(144, 45%, 64%) |
| OKLCH | oklch(77.8% 0.111 156.1) |
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 #78CC99 | 1.92:1 | Fails | Lc -41.1 | Non-text elements, placeholder text |
| Black text on #78CC99 | 10.89:1 | AAA | Lc 67.1 | Content text, not long reading |
| #78CC99 text on white | 1.92:1 | Fails | Lc 36.8 | Non-text elements, placeholder text |
| #78CC99 text on black | 10.89:1 | AAA | Lc -65.7 | 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
#EEF9F1
oklch(97.2% 0.016 154.5)
-
Step 100
100
#DAF1E1
oklch(93.7% 0.032 155.4)
-
Step 200
200
#B9E6C8
oklch(88.5% 0.062 155.7)
-
Step 300
300 (this color)
#78CC99
oklch(77.8% 0.111 156.1)
-
Step 400
400
#00BF72
oklch(70.8% 0.171 156.2)
-
Step 500
500
#00A461
oklch(63.2% 0.153 156.1)
-
Step 600
600
#008A50
oklch(55.7% 0.136 155.8)
-
Step 700
700
#007443
oklch(49.1% 0.119 156.1)
-
Step 800
800
#005F36
oklch(42.7% 0.103 156.1)
-
Step 900
900
#004F2C
oklch(37.6% 0.091 156.1)
-
Step 950
950
#002F18
oklch(26.8% 0.065 156.1)
#78CC99 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) | #CBC096 | 0.101 |
| Deuteranopia (no green cones) | #BEB79C | 0.098 |
| Tritanopia (no blue cones) | #66CBBE | 0.053 |
| Achromatopsia (no color) | #BBBBBB | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #78CC99
#78CC99
oklch(77.8% 0.111 156.1)
- #E49BD2
#E49BD2
oklch(77.8% 0.112 336)
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 #78CC99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.025
- Seafoam Blue #78D1B6 ΔE 0.038
- Pale Teal #82CBB2 ΔE 0.038
- Dark Sea Green #8FBC8F ΔE 0.045
- Soft Green #6FC276 ΔE 0.048
- Emerald #06D6A0 ΔE 0.055
- Light Moss Green #A6C875 ΔE 0.058
- Tiffany Blue #94D2BD ΔE 0.060
Use #78CC99 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.