#669B78
Closest named color: Grey Teal (#5E9B8A). oklch(64.2% 0.077 154.7), rgb(102, 155, 120).
Aa
Black text reads best on this color (6.52:1).
About this color
#669B78 is a medium-light, moderately saturated green. In OKLCH its lightness is 64%, its chroma 0.077 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grey Teal (#5E9B8A), ΔE 0.026 away. Black text reads best on it, at 6.52:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.077) |
| Temperature | in between |
| Nearest name | Grey Teal (#5E9B8A) |
| Black text | 6.52:1 |
| White text | 3.21:1 |
Values
| HEX | #669B78 |
| RGB | rgb(102, 155, 120) |
| HSL | hsl(140, 21%, 50%) |
| OKLCH | oklch(64.2% 0.077 154.7) |
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 #669B78 | 3.21:1 | AA large text | Lc -64.8 | Content text, not long reading |
| Black text on #669B78 | 6.52:1 | AA | Lc 44.7 | Non-text elements, placeholder text |
| #669B78 text on white | 3.21:1 | AA large text | Lc 59.3 | Large or bold text, headings |
| #669B78 text on black | 6.52:1 | 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
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E4ECE7
oklch(93.6% 0.011 158.8)
-
Step 200
200
#CFDDD3
oklch(88.4% 0.02 154.9)
-
Step 300
300
#AEC8B6
oklch(80.8% 0.038 155.3)
-
Step 400
400
#83AC90
oklch(70.7% 0.06 154.8)
-
Step 500
500 (this color)
#669B78
oklch(64.2% 0.077 154.7)
-
Step 600
600
#48825D
oklch(55.6% 0.084 154.6)
-
Step 700
700
#396E4D
oklch(49.2% 0.078 154.9)
-
Step 800
800
#30593F
oklch(42.6% 0.064 154.8)
-
Step 900
900
#2B4A36
oklch(37.8% 0.051 154.9)
-
Step 950
950
#1A2B1F
oklch(27% 0.032 153.1)
#669B78 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) | #9B9376 | 0.070 |
| Deuteranopia (no green cones) | #928D7A | 0.068 |
| Tritanopia (no blue cones) | #5C9A91 | 0.038 |
| Achromatopsia (no color) | #8F8F8F | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669B78
#669B78
oklch(64.2% 0.077 154.7)
- #AA7BA0
#AA7BA0
oklch(64.2% 0.077 334.2)
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 #669B78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Teal #5E9B8A ΔE 0.026
- Green Grey #77926F ΔE 0.029
- Dull Teal #5F9E8F ΔE 0.031
- Greeny Grey #7EA07A ΔE 0.033
- Slate Green #658D6D ΔE 0.040
- Ocean Green #3D9973 ΔE 0.040
- Moss #769958 ΔE 0.041
- Grey Green #86A17D ΔE 0.045
Use #669B78 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.