#99C978
Closest named color: Light Moss Green (#A6C875). oklch(78.3% 0.12 133.5), rgb(153, 201, 120).
Aa
Black text reads best on this color (10.98:1).
About this color
#99C978 is a light, moderately saturated green. In OKLCH its lightness is 78%, its chroma 0.120 and its hue 133°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Moss Green (#A6C875), ΔE 0.015 away. Black text reads best on it, at 10.98:1.
| Hue family | Greens |
| Lightness | light (78%) |
| Chroma | moderately saturated (0.120) |
| Temperature | in between |
| Nearest name | Light Moss Green (#A6C875) |
| Black text | 10.98:1 |
| White text | 1.91:1 |
Values
| HEX | #99C978 |
| RGB | rgb(153, 201, 120) |
| HSL | hsl(96, 43%, 63%) |
| OKLCH | oklch(78.3% 0.12 133.5) |
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 #99C978 | 1.91:1 | Fails | Lc -40.7 | Non-text elements, placeholder text |
| Black text on #99C978 | 10.98:1 | AAA | Lc 67.5 | Content text, not long reading |
| #99C978 text on white | 1.91:1 | Fails | Lc 36.4 | Non-text elements, placeholder text |
| #99C978 text on black | 10.98:1 | AAA | Lc -66.0 | 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
#F1F8ED
oklch(97.1% 0.016 133.8)
-
Step 100
100
#E1EFD8
oklch(93.5% 0.034 133)
-
Step 200
200
#C8E3B7
oklch(88.5% 0.066 133.4)
-
Step 300
300 (this color)
#99C978
oklch(78.3% 0.12 133.5)
-
Step 400
400
#6CB81C
oklch(70.6% 0.192 133.5)
-
Step 500
500
#599F00
oklch(63.1% 0.18 133.6)
-
Step 600
600
#4A8600
oklch(55.7% 0.159 133.6)
-
Step 700
700
#3E7000
oklch(49% 0.139 133.3)
-
Step 800
800
#315C00
oklch(42.6% 0.122 133.6)
-
Step 900
900
#284D00
oklch(37.7% 0.108 133.7)
-
Step 950
950
#162E00
oklch(27.1% 0.077 133.4)
#99C978 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) | #CFBE72 | 0.073 |
| Deuteranopia (no green cones) | #C8BA7C | 0.073 |
| Tritanopia (no blue cones) | #9AC3B5 | 0.088 |
| Achromatopsia (no color) | #BBBBBB | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99C978
#99C978
oklch(78.3% 0.12 133.5)
- #D4A1EF
#D4A1EF
oklch(78.3% 0.121 313.5)
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 #99C978, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Moss Green #A6C875 ΔE 0.015
- Light Olive #ACBF69 ΔE 0.032
- Tan Green #A9BE70 ΔE 0.032
- Light Olive Green #A4BE5C ΔE 0.034
- Pale Olive Green #B1D27B ΔE 0.040
- Pale Olive #B9CC81 ΔE 0.044
- Greenish Tan #BCCB7A ΔE 0.045
- Soft Green #6FC276 ΔE 0.051
Use #99C978 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.