#64B251
Closest named color: Dark Pastel Green (#56AE57). oklch(69.1% 0.154 139.7), rgb(100, 178, 81).
Aa
Black text reads best on this color (8.02:1).
About this color
#64B251 is a medium-light, vivid green. In OKLCH its lightness is 69%, its chroma 0.154 and its hue 140°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Pastel Green (#56AE57), ΔE 0.020 away. Black text reads best on it, at 8.02:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Dark Pastel Green (#56AE57) |
| Black text | 8.02:1 |
| White text | 2.61:1 |
Values
| HEX | #64B251 |
| RGB | rgb(100, 178, 81) |
| HSL | hsl(108, 39%, 51%) |
| OKLCH | oklch(69.1% 0.154 139.7) |
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 #64B251 | 2.61:1 | Fails | Lc -56.0 | Large or bold text, headings |
| Black text on #64B251 | 8.02:1 | AAA | Lc 53.2 | Large or bold text, headings |
| #64B251 text on white | 2.61:1 | Fails | Lc 50.8 | Large or bold text, headings |
| #64B251 text on black | 8.02:1 | AAA | Lc -51.1 | 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
#C7E2C1
oklch(88.4% 0.053 140)
-
Step 300
300
#A0D095
oklch(80.9% 0.095 139.8)
-
Step 400
400 (this color)
#64B251
oklch(69.1% 0.154 139.7)
-
Step 500
500
#38A410
oklch(63.2% 0.197 139.8)
-
Step 600
600
#2A8A00
oklch(55.5% 0.178 139.8)
-
Step 700
700
#227400
oklch(49% 0.157 139.8)
-
Step 800
800
#1A5F00
oklch(42.6% 0.136 139.8)
-
Step 900
900
#155000
oklch(37.8% 0.121 139.7)
-
Step 950
950
#0C2F03
oklch(26.9% 0.081 139.7)
#64B251 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) | #B7A448 | 0.106 |
| Deuteranopia (no green cones) | #AC9D58 | 0.106 |
| Tritanopia (no blue cones) | #5EAD9C | 0.103 |
| Achromatopsia (no color) | #A0A0A0 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64B251
#64B251
oklch(69.1% 0.154 139.7)
- #C579D7
#C579D7
oklch(69.1% 0.155 319.7)
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 #64B251, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Pastel Green #56AE57 ΔE 0.020
- Boring Green #63B365 ΔE 0.022
- Turtle Green #75B84F ΔE 0.026
- Fern #63A950 ΔE 0.026
- Leaf #71AA34 ΔE 0.028
- Asparagus #77AB56 ΔE 0.029
- Leafy Green #51B73B ΔE 0.034
- Cool Green #33B864 ΔE 0.034
Use #64B251 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.