#669E58
Closest named color: Flat Green (#699D4C). oklch(64.3% 0.116 139.5), rgb(102, 158, 88).
Aa
Black text reads best on this color (6.59:1).
About this color
#669E58 is a medium-light, moderately saturated green. In OKLCH its lightness is 64%, its chroma 0.116 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 0.013 away. Black text reads best on it, at 6.59:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Flat Green (#699D4C) |
| Black text | 6.59:1 |
| White text | 3.18:1 |
Values
| HEX | #669E58 |
| RGB | rgb(102, 158, 88) |
| HSL | hsl(108, 28%, 48%) |
| OKLCH | oklch(64.3% 0.116 139.5) |
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 #669E58 | 3.18:1 | AA large text | Lc -64.3 | Content text, not long reading |
| Black text on #669E58 | 6.59:1 | AA | Lc 45.2 | Large or bold text, headings |
| #669E58 text on white | 3.18:1 | AA large text | Lc 58.9 | Large or bold text, headings |
| #669E58 text on black | 6.59:1 | AA | Lc -42.9 | 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
#F3F7F2
oklch(97.2% 0.008 139.4)
-
Step 100
100
#E4EDE2
oklch(93.6% 0.017 140)
-
Step 200
200
#CFDFCB
oklch(88.6% 0.032 139.4)
-
Step 300
300
#AECAA7
oklch(80.9% 0.057 139.4)
-
Step 400
400
#83AF78
oklch(70.8% 0.091 139.5)
-
Step 500
500 (this color)
#669E58
oklch(64.3% 0.116 139.5)
-
Step 600
600
#488538
oklch(55.7% 0.127 139.5)
-
Step 700
700
#39702B
oklch(49.1% 0.117 139.7)
-
Step 800
800
#305B24
oklch(42.6% 0.097 139.3)
-
Step 900
900
#2B4B23
oklch(37.7% 0.075 139.6)
-
Step 950
950
#192C15
oklch(27% 0.048 140.2)
#669E58 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) | #A29353 | 0.082 |
| Deuteranopia (no green cones) | #998E5C | 0.080 |
| Tritanopia (no blue cones) | #629A8D | 0.078 |
| Achromatopsia (no color) | #909090 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669E58
#669E58
oklch(64.3% 0.116 139.5)
- #AC75B9
#AC75B9
oklch(64.3% 0.116 319.8)
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 #669E58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Green #699D4C ΔE 0.013
- Muted Green #5FA052 ΔE 0.013
- Off Green #6BA353 ΔE 0.018
- Moss #769958 ΔE 0.022
- Drab Green #749551 ΔE 0.027
- Dull Green #74A662 ΔE 0.031
- Fern #63A950 ΔE 0.036
- Algae #54AC68 ΔE 0.039
Use #669E58 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.