#63C699
Closest named color: Medium Aquamarine (#66CDAA). oklch(75.4% 0.115 162.2), rgb(99, 198, 153).
Aa
Black text reads best on this color (10.06:1).
About this color
#63C699 is a medium-light, moderately saturated green. In OKLCH its lightness is 75%, its chroma 0.115 and its hue 162°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.027 away. Black text reads best on it, at 10.06:1.
| Hue family | Greens |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.115) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.06:1 |
| White text | 2.08:1 |
Values
| HEX | #63C699 |
| RGB | rgb(99, 198, 153) |
| HSL | hsl(153, 46%, 58%) |
| OKLCH | oklch(75.4% 0.115 162.2) |
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 #63C699 | 2.08:1 | Fails | Lc -45.2 | Large or bold text, headings |
| Black text on #63C699 | 10.06:1 | AAA | Lc 63.4 | Content text, not long reading |
| #63C699 text on white | 2.08:1 | Fails | Lc 40.6 | Non-text elements, placeholder text |
| #63C699 text on black | 10.06:1 | AAA | Lc -61.7 | 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 400.
-
Step 50
50
#F0F8F3
oklch(97.2% 0.011 158.8)
-
Step 100
100
#DEEEE6
oklch(93.5% 0.02 164.6)
-
Step 200
200
#C3E2D1
oklch(88.5% 0.04 161.5)
-
Step 300
300
#97D0B3
oklch(81% 0.072 162.1)
-
Step 400
400 (this color)
#63C699
oklch(75.4% 0.115 162.2)
-
Step 500
500
#00A26F
oklch(63% 0.138 162.1)
-
Step 600
600
#00895D
oklch(55.7% 0.122 162)
-
Step 700
700
#00734E
oklch(49.1% 0.107 162.4)
-
Step 800
800
#005E3F
oklch(42.6% 0.093 162.3)
-
Step 900
900
#004F34
oklch(37.8% 0.083 162.1)
-
Step 950
950
#002F1D
oklch(27% 0.059 161.7)
#63C699 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) | #C3BA97 | 0.111 |
| Deuteranopia (no green cones) | #B4AF9C | 0.108 |
| Tritanopia (no blue cones) | #43C6B9 | 0.047 |
| Achromatopsia (no color) | #B3B3B3 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63C699
#63C699
oklch(75.4% 0.115 162.2)
- #E291C4
#E291C4
oklch(75.4% 0.117 342)
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 #63C699, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.027
- Soft Green #6FC276 ΔE 0.042
- Greenblue #23C48B ΔE 0.044
- Dark Sea Green #8FBC8F ΔE 0.046
- Pale Teal #82CBB2 ΔE 0.049
- Seafoam Blue #78D1B6 ΔE 0.051
- Emerald #06D6A0 ΔE 0.051
- Green Blue #01C08D ΔE 0.052
Use #63C699 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.