#669D18
Closest named color: Leaf Green (#5CA904). oklch(63.4% 0.164 130.8), rgb(102, 157, 24).
Aa
Black text reads best on this color (6.40:1).
About this color
#669D18 is a medium-light, vivid green. In OKLCH its lightness is 63%, its chroma 0.164 and its hue 131°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leaf Green (#5CA904), ΔE 0.037 away. Black text reads best on it, at 6.40:1.
| Hue family | Greens |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.164) |
| Temperature | in between |
| Nearest name | Leaf Green (#5CA904) |
| Black text | 6.40:1 |
| White text | 3.28:1 |
Values
| HEX | #669D18 |
| RGB | rgb(102, 157, 24) |
| HSL | hsl(85, 73%, 35%) |
| OKLCH | oklch(63.4% 0.164 130.8) |
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 #669D18 | 3.28:1 | AA large text | Lc -65.3 | Content text, not long reading |
| Black text on #669D18 | 6.40:1 | AA | Lc 44.2 | Non-text elements, placeholder text |
| #669D18 text on white | 3.28:1 | AA large text | Lc 59.9 | Large or bold text, headings |
| #669D18 text on black | 6.40:1 | AA | Lc -41.8 | 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
#E4EDDD
oklch(93.5% 0.023 131.1)
-
Step 200
200
#CFE0C1
oklch(88.6% 0.045 130.9)
-
Step 300
300
#AFCC95
oklch(81% 0.081 130.6)
-
Step 400
400
#84B157
oklch(70.8% 0.129 131)
-
Step 500
500 (this color)
#669D18
oklch(63.4% 0.164 130.8)
-
Step 600
600
#538400
oklch(55.7% 0.152 130.8)
-
Step 700
700
#456F00
oklch(49.2% 0.134 130.8)
-
Step 800
800
#385B00
oklch(42.8% 0.116 130.7)
-
Step 900
900
#2E4C00
oklch(37.8% 0.103 130.7)
-
Step 950
950
#1A2D04
oklch(27.1% 0.068 131.3)
#669D18 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) | #A49100 | 0.087 |
| Deuteranopia (no green cones) | #9D8D29 | 0.088 |
| Tritanopia (no blue cones) | #689686 | 0.127 |
| Achromatopsia (no color) | #8E8E8E | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669D18
#669D18
oklch(63.4% 0.164 130.8)
- #AA69D3
#AA69D3
oklch(63.4% 0.165 310.8)
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 #669D18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leaf Green #5CA904 ΔE 0.037
- Mid Green #50A747 ΔE 0.037
- Grassy Green #419C03 ΔE 0.038
- Dark Yellow Green #728F02 ΔE 0.039
- Grass Green #3F9B0B ΔE 0.039
- Grass #5CAC2D ΔE 0.041
- Flat Green #699D4C ΔE 0.041
- Leaf #71AA34 ΔE 0.041
Use #669D18 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.