#669E40
Closest named color: Flat Green (#699D4C). oklch(63.9% 0.14 134.5), rgb(102, 158, 64).
Aa
Black text reads best on this color (6.52:1).
About this color
#669E40 is a medium-light, moderately saturated green. In OKLCH its lightness is 64%, its chroma 0.140 and its hue 135°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Flat Green (#699D4C), ΔE 0.015 away. Black text reads best on it, at 6.52:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.140) |
| Temperature | in between |
| Nearest name | Flat Green (#699D4C) |
| Black text | 6.52:1 |
| White text | 3.21:1 |
Values
| HEX | #669E40 |
| RGB | rgb(102, 158, 64) |
| HSL | hsl(96, 42%, 44%) |
| OKLCH | oklch(63.9% 0.14 134.5) |
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 #669E40 | 3.21:1 | AA large text | Lc -64.7 | Content text, not long reading |
| Black text on #669E40 | 6.52:1 | AA | Lc 44.8 | Non-text elements, placeholder text |
| #669E40 text on white | 3.21:1 | AA large text | Lc 59.2 | Large or bold text, headings |
| #669E40 text on black | 6.52:1 | AA | Lc -42.5 | 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
#F3F7F1
oklch(97.1% 0.009 134.9)
-
Step 100
100
#E4EDE0
oklch(93.6% 0.02 135.8)
-
Step 200
200
#CFDFC6
oklch(88.5% 0.038 134.1)
-
Step 300
300
#AECB9E
oklch(80.9% 0.069 134.5)
-
Step 400
400
#83B069
oklch(70.7% 0.11 134.8)
-
Step 500
500 (this color)
#669E40
oklch(63.9% 0.14 134.5)
-
Step 600
600
#4A8515
oklch(55.5% 0.151 134.4)
-
Step 700
700
#3B7102
oklch(49.2% 0.141 134.4)
-
Step 800
800
#315C0B
oklch(42.7% 0.117 134.5)
-
Step 900
900
#2B4C14
oklch(37.8% 0.092 134.9)
-
Step 950
950
#1A2C0D
oklch(26.9% 0.057 134)
#669E40 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) | #A49236 | 0.085 |
| Deuteranopia (no green cones) | #9C8E47 | 0.085 |
| Tritanopia (no blue cones) | #65988A | 0.103 |
| Achromatopsia (no color) | #8F8F8F | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669E40
#669E40
oklch(63.9% 0.14 134.5)
- #AB70C6
#AB70C6
oklch(64% 0.139 314.5)
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 #669E40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Green #699D4C ΔE 0.015
- Muted Green #5FA052 ΔE 0.017
- Off Green #6BA353 ΔE 0.023
- Mid Green #50A747 ΔE 0.029
- Fern #63A950 ΔE 0.031
- Drab Green #749551 ΔE 0.040
- Moss #769958 ΔE 0.041
- Leaf #71AA34 ΔE 0.041
Use #669E40 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.