#649B21
Closest named color: Dark Yellow Green (#728F02). oklch(62.8% 0.159 131.5), rgb(100, 155, 33).
Aa
Black text reads best on this color (6.25:1).
About this color
#649B21 is a medium-light, vivid green. In OKLCH its lightness is 63%, its chroma 0.159 and its hue 131°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Yellow Green (#728F02), ΔE 0.034 away. Black text reads best on it, at 6.25:1.
| Hue family | Greens |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Dark Yellow Green (#728F02) |
| Black text | 6.25:1 |
| White text | 3.35:1 |
Values
| HEX | #649B21 |
| RGB | rgb(100, 155, 33) |
| HSL | hsl(87, 65%, 37%) |
| OKLCH | oklch(62.8% 0.159 131.5) |
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 #649B21 | 3.35:1 | AA large text | Lc -66.3 | Content text, not long reading |
| Black text on #649B21 | 6.25:1 | AA | Lc 43.3 | Non-text elements, placeholder text |
| #649B21 text on white | 3.35:1 | AA large text | Lc 60.8 | Content text, not long reading |
| #649B21 text on black | 6.25:1 | AA | Lc -40.9 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F3F7F0
oklch(97.1% 0.01 131.4)
-
Step 100
100
#E4EDDE
oklch(93.5% 0.022 132.5)
-
Step 200
200
#CFE0C2
oklch(88.6% 0.044 131.5)
-
Step 300
300
#AFCC97
oklch(81% 0.079 131.3)
-
Step 400
400
#84B05B
oklch(70.6% 0.124 131.4)
-
Step 500
500 (this color)
#649B21
oklch(62.8% 0.159 131.5)
-
Step 600
600
#518400
oklch(55.5% 0.153 131.4)
-
Step 700
700
#436F00
oklch(49% 0.135 131.5)
-
Step 800
800
#365B00
oklch(42.7% 0.117 131.5)
-
Step 900
900
#2C4C00
oklch(37.7% 0.104 131.6)
-
Step 950
950
#1A2D06
oklch(27.1% 0.066 131.9)
#649B21 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) | #A28F00 | 0.085 |
| Deuteranopia (no green cones) | #9A8B2E | 0.086 |
| Tritanopia (no blue cones) | #669484 | 0.121 |
| Achromatopsia (no color) | #8C8C8C | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #649B21
#649B21
oklch(62.8% 0.159 131.5)
- #A868CD
#A868CD
oklch(62.7% 0.159 311.9)
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 #649B21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Yellow Green #728F02 ΔE 0.034
- Flat Green #699D4C ΔE 0.037
- Grassy Green #419C03 ΔE 0.038
- Mid Green #50A747 ΔE 0.038
- Olive Drab #6B8E23 ΔE 0.038
- Grass Green #3F9B0B ΔE 0.038
- Muted Green #5FA052 ΔE 0.040
- Leaf Green #5CA904 ΔE 0.044
Use #649B21 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.