#669C5B
Closest named color: Flat Green (#699D4C). oklch(63.8% 0.11 140.3), rgb(102, 156, 91).
Aa
Black text reads best on this color (6.47:1).
About this color
#669C5B is a medium-light, moderately saturated green. In OKLCH its lightness is 64%, its chroma 0.110 and its hue 140°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Flat Green (#699D4C), ΔE 0.018 away. Black text reads best on it, at 6.47:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Flat Green (#699D4C) |
| Black text | 6.47:1 |
| White text | 3.24:1 |
Values
| HEX | #669C5B |
| RGB | rgb(102, 156, 91) |
| HSL | hsl(110, 26%, 48%) |
| OKLCH | oklch(63.8% 0.11 140.3) |
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 #669C5B | 3.24:1 | AA large text | Lc -65.1 | Content text, not long reading |
| Black text on #669C5B | 6.47:1 | AA | Lc 44.4 | Non-text elements, placeholder text |
| #669C5B text on white | 3.24:1 | AA large text | Lc 59.6 | Large or bold text, headings |
| #669C5B text on black | 6.47:1 | AA | Lc -42.1 | 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
#F3F7F2
oklch(97.2% 0.008 139.4)
-
Step 100
100
#E5EDE3
oklch(93.7% 0.016 139.4)
-
Step 200
200
#CFDECC
oklch(88.4% 0.029 140.5)
-
Step 300
300
#AFCAA9
oklch(81% 0.054 140)
-
Step 400
400
#84AE7B
oklch(70.7% 0.086 140.1)
-
Step 500
500 (this color)
#669C5B
oklch(63.8% 0.11 140.3)
-
Step 600
600
#4A843E
oklch(55.6% 0.119 140.3)
-
Step 700
700
#3B7030
oklch(49.2% 0.111 140.3)
-
Step 800
800
#315B28
oklch(42.7% 0.092 140.2)
-
Step 900
900
#2C4B25
oklch(37.8% 0.072 139.9)
-
Step 950
950
#1A2C16
oklch(27% 0.046 140)
#669C5B 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) | #9F9256 | 0.077 |
| Deuteranopia (no green cones) | #978D5F | 0.076 |
| Tritanopia (no blue cones) | #62988C | 0.073 |
| Achromatopsia (no color) | #8F8F8F | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669C5B
#669C5B
oklch(63.8% 0.11 140.3)
- #A975B5
#A975B5
oklch(63.8% 0.11 319.9)
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 #669C5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Green #699D4C ΔE 0.018
- Moss #769958 ΔE 0.019
- Muted Green #5FA052 ΔE 0.020
- Drab Green #749551 ΔE 0.023
- Off Green #6BA353 ΔE 0.026
- Dull Green #74A662 ΔE 0.035
- Camo #7F8F4E ΔE 0.043
- Light Forest Green #4F9153 ΔE 0.043
Use #669C5B 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.