#63AA4A
Closest named color: Fern (#63A950). oklch(66.9% 0.149 138.3), rgb(99, 170, 74).
Aa
Black text reads best on this color (7.37:1).
About this color
#63AA4A is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.149 and its hue 138°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern (#63A950), ΔE 0.008 away. Black text reads best on it, at 7.37:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Fern (#63A950) |
| Black text | 7.37:1 |
| White text | 2.84:1 |
Values
| HEX | #63AA4A |
| RGB | rgb(99, 170, 74) |
| HSL | hsl(104, 39%, 48%) |
| OKLCH | oklch(66.9% 0.149 138.3) |
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 #63AA4A | 2.84:1 | Fails | Lc -59.6 | Large or bold text, headings |
| Black text on #63AA4A | 7.37:1 | AAA | Lc 49.7 | Large or bold text, headings |
| #63AA4A text on white | 2.84:1 | Fails | Lc 54.4 | Large or bold text, headings |
| #63AA4A text on black | 7.37:1 | AAA | Lc -47.5 | Large or bold text, headings |
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
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#E1EFDD
oklch(93.7% 0.028 138.7)
-
Step 200
200
#C9E2C1
oklch(88.6% 0.052 138.1)
-
Step 300
300
#A3CF95
oklch(80.8% 0.092 138.3)
-
Step 400
400 (this color)
#63AA4A
oklch(66.9% 0.149 138.3)
-
Step 500
500
#43A210
oklch(63% 0.19 138.3)
-
Step 600
600
#348900
oklch(55.6% 0.173 138.4)
-
Step 700
700
#2B7300
oklch(49% 0.152 138.2)
-
Step 800
800
#225F00
oklch(42.8% 0.133 138.3)
-
Step 900
900
#1B4F00
oklch(37.7% 0.117 138.3)
-
Step 950
950
#0F2F03
oklch(27.1% 0.079 138.5)
#63AA4A 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) | #AF9D41 | 0.099 |
| Deuteranopia (no green cones) | #A59751 | 0.099 |
| Tritanopia (no blue cones) | #5FA595 | 0.103 |
| Achromatopsia (no color) | #999999 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63AA4A
#63AA4A
oklch(66.9% 0.149 138.3)
- #BB75D0
#BB75D0
oklch(67% 0.149 318.1)
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 #63AA4A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern #63A950 ΔE 0.008
- Dark Pastel Green #56AE57 ΔE 0.016
- Leaf #71AA34 ΔE 0.021
- Mid Green #50A747 ΔE 0.021
- Off Green #6BA353 ΔE 0.026
- Asparagus #77AB56 ΔE 0.027
- Grass #5CAC2D ΔE 0.029
- Algae #54AC68 ΔE 0.032
Use #63AA4A 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.