#669D8D
Closest named color: Dull Teal (#5F9E8F). oklch(65.3% 0.063 174), rgb(102, 157, 141).
Aa
Black text reads best on this color (6.77:1).
About this color
#669D8D is a medium-light, muted teal or cyan. In OKLCH its lightness is 65%, its chroma 0.063 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Teal (#5F9E8F), ΔE 0.007 away. Black text reads best on it, at 6.77:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Dull Teal (#5F9E8F) |
| Black text | 6.77:1 |
| White text | 3.10:1 |
Values
| HEX | #669D8D |
| RGB | rgb(102, 157, 141) |
| HSL | hsl(163, 22%, 51%) |
| OKLCH | oklch(65.3% 0.063 174) |
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 #669D8D | 3.10:1 | AA large text | Lc -63.3 | Content text, not long reading |
| Black text on #669D8D | 6.77:1 | AA | Lc 46.1 | Large or bold text, headings |
| #669D8D text on white | 3.10:1 | AA large text | Lc 57.9 | Large or bold text, headings |
| #669D8D text on black | 6.77:1 | AA | Lc -43.8 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CEDDD8
oklch(88.5% 0.017 174)
-
Step 300
300
#ADC7BF
oklch(80.8% 0.03 175)
-
Step 400
400
#81AB9E
oklch(70.7% 0.049 173.8)
-
Step 500
500 (this color)
#669D8D
oklch(65.3% 0.063 174)
-
Step 600
600
#448170
oklch(55.7% 0.069 173.5)
-
Step 700
700
#356D5E
oklch(49.2% 0.065 173.9)
-
Step 800
800
#2D594D
oklch(42.8% 0.053 173.9)
-
Step 900
900
#294940
oklch(37.8% 0.041 174.1)
-
Step 950
950
#182B25
oklch(27% 0.027 172.2)
#669D8D 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) | #99968C | 0.066 |
| Deuteranopia (no green cones) | #908F8E | 0.064 |
| Tritanopia (no blue cones) | #569E98 | 0.020 |
| Achromatopsia (no color) | #929292 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669D8D
#669D8D
oklch(65.3% 0.063 174)
- #B08093
#B08093
oklch(65.3% 0.064 353.5)
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 #669D8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Teal #5F9E8F ΔE 0.007
- Grey Teal #5E9B8A ΔE 0.012
- Cadet Blue #5F9EA0 ΔE 0.027
- Greeny Grey #7EA07A ΔE 0.040
- Sea #3C9992 ΔE 0.041
- Green Grey #77926F ΔE 0.044
- Grey Green #86A17D ΔE 0.046
- Persian Green #2A9D8F ΔE 0.046
Use #669D8D 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.