#669F8F
Closest named color: Dull Teal (#5F9E8F). oklch(65.8% 0.065 174.6), rgb(102, 159, 143).
Aa
Black text reads best on this color (6.92:1).
About this color
#669F8F is a medium-light, muted teal or cyan. In OKLCH its lightness is 66%, its chroma 0.065 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Teal (#5F9E8F), ΔE 0.008 away. Black text reads best on it, at 6.92:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Dull Teal (#5F9E8F) |
| Black text | 6.92:1 |
| White text | 3.03:1 |
Values
| HEX | #669F8F |
| RGB | rgb(102, 159, 143) |
| HSL | hsl(163, 23%, 51%) |
| OKLCH | oklch(65.8% 0.065 174.6) |
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 #669F8F | 3.03:1 | AA large text | Lc -62.4 | Content text, not long reading |
| Black text on #669F8F | 6.92:1 | AA | Lc 47.0 | Large or bold text, headings |
| #669F8F text on white | 3.03:1 | AA large text | Lc 57.1 | Large or bold text, headings |
| #669F8F text on black | 6.92:1 | AA | Lc -44.7 | 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
#ACC8BF
oklch(80.9% 0.033 174.1)
-
Step 400
400
#80AB9E
oklch(70.6% 0.05 174.2)
-
Step 500
500 (this color)
#669F8F
oklch(65.8% 0.065 174.6)
-
Step 600
600
#428171
oklch(55.6% 0.07 175.1)
-
Step 700
700
#336D5E
oklch(49.1% 0.066 174.3)
-
Step 800
800
#2B594D
oklch(42.7% 0.055 174.5)
-
Step 900
900
#284940
oklch(37.7% 0.042 174.5)
-
Step 950
950
#182B26
oklch(27.1% 0.027 175.7)
#669F8F 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) | #9B988E | 0.068 |
| Deuteranopia (no green cones) | #919190 | 0.064 |
| Tritanopia (no blue cones) | #55A09A | 0.020 |
| Achromatopsia (no color) | #949494 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669F8F
#669F8F
oklch(65.8% 0.065 174.6)
- #B28194
#B28194
oklch(65.7% 0.065 354)
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 #669F8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Teal #5F9E8F ΔE 0.008
- Grey Teal #5E9B8A ΔE 0.016
- Cadet Blue #5F9EA0 ΔE 0.027
- Greeny Grey #7EA07A ΔE 0.039
- Sea #3C9992 ΔE 0.043
- Grey Green #86A17D ΔE 0.044
- Persian Green #2A9D8F ΔE 0.047
- Green Grey #77926F ΔE 0.048
Use #669F8F 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.