#669D55
Closest named color: Flat Green (#699D4C). oklch(64% 0.118 138.6), rgb(102, 157, 85).
Aa
Black text reads best on this color (6.51:1).
About this color
#669D55 is a medium-light, moderately saturated green. In OKLCH its lightness is 64%, its chroma 0.118 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Flat Green (#699D4C), ΔE 0.010 away. Black text reads best on it, at 6.51:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.118) |
| Temperature | in between |
| Nearest name | Flat Green (#699D4C) |
| Black text | 6.51:1 |
| White text | 3.22:1 |
Values
| HEX | #669D55 |
| RGB | rgb(102, 157, 85) |
| HSL | hsl(106, 30%, 47%) |
| OKLCH | oklch(64% 0.118 138.6) |
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 #669D55 | 3.22:1 | AA large text | Lc -64.8 | Content text, not long reading |
| Black text on #669D55 | 6.51:1 | AA | Lc 44.7 | Non-text elements, placeholder text |
| #669D55 text on white | 3.22:1 | AA large text | Lc 59.3 | Large or bold text, headings |
| #669D55 text on black | 6.51:1 | AA | Lc -42.4 | 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
#E4EDE2
oklch(93.6% 0.017 140)
-
Step 200
200
#CFDFCA
oklch(88.6% 0.033 138.2)
-
Step 300
300
#AECAA6
oklch(80.8% 0.058 138.8)
-
Step 400
400
#83AF76
oklch(70.7% 0.093 138.7)
-
Step 500
500 (this color)
#669D55
oklch(64% 0.118 138.6)
-
Step 600
600
#498436
oklch(55.5% 0.127 138.7)
-
Step 700
700
#3A7028
oklch(49.1% 0.119 138.7)
-
Step 800
800
#315B23
oklch(42.6% 0.097 138.6)
-
Step 900
900
#2B4B21
oklch(37.7% 0.077 138.7)
-
Step 950
950
#1A2C14
oklch(27% 0.049 138.2)
#669D55 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) | #A1924F | 0.080 |
| Deuteranopia (no green cones) | #998D59 | 0.080 |
| Tritanopia (no blue cones) | #63998C | 0.080 |
| Achromatopsia (no color) | #8F8F8F | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669D55
#669D55
oklch(64% 0.118 138.6)
- #AA74BA
#AA74BA
oklch(64% 0.118 318.3)
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 #669D55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Green #699D4C ΔE 0.010
- Muted Green #5FA052 ΔE 0.013
- Off Green #6BA353 ΔE 0.020
- Moss #769958 ΔE 0.023
- Drab Green #749551 ΔE 0.026
- Dull Green #74A662 ΔE 0.034
- Fern #63A950 ΔE 0.037
- Algae #54AC68 ΔE 0.042
Use #669D55 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.