#3F6F69
Closest named color: Dark Aquamarine (#017371). oklch(50.6% 0.053 185.4), rgb(63, 111, 105).
Aa
White text reads best on this color (5.69:1).
About this color
#3F6F69 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 51%, its chroma 0.053 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.034 away. White text reads best on it, at 5.69:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.68:1 |
| White text | 5.69:1 |
Values
| HEX | #3F6F69 |
| RGB | rgb(63, 111, 105) |
| HSL | hsl(173, 28%, 34%) |
| OKLCH | oklch(50.6% 0.053 185.4) |
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 #3F6F69 | 5.69:1 | AA | Lc -83.6 | Fine for body text |
| Black text on #3F6F69 | 3.68:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #3F6F69 text on white | 5.69:1 | AA | Lc 78.4 | Fine for body text |
| #3F6F69 text on black | 3.68:1 | AA large text | Lc -23.4 | Dividers and decoration only |
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 700.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEA
oklch(93.5% 0.007 185.3)
-
Step 200
200
#CFDCDA
oklch(88.4% 0.014 185.9)
-
Step 300
300
#AFC6C3
oklch(80.8% 0.025 187.2)
-
Step 400
400
#84A9A4
oklch(70.6% 0.041 186.1)
-
Step 500
500
#64948E
oklch(63% 0.053 186.1)
-
Step 600
600
#4A7F78
oklch(55.7% 0.058 184.9)
-
Step 700
700 (this color)
#3F6F69
oklch(50.6% 0.053 185.4)
-
Step 800
800
#315752
oklch(42.7% 0.044 185)
-
Step 900
900
#2C4844
oklch(37.8% 0.035 184.5)
-
Step 950
950
#1A2A28
oklch(27% 0.022 186.2)
#3F6F69 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) | #6B6A69 | 0.058 |
| Deuteranopia (no green cones) | #62646A | 0.054 |
| Tritanopia (no blue cones) | #2C716D | 0.016 |
| Achromatopsia (no color) | #676767 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F6F69
#3F6F69
oklch(50.6% 0.053 185.4)
- #805860
#805860
oklch(50.6% 0.054 6)
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 #3F6F69, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.034
- Deep Turquoise #017374 ΔE 0.034
- Bluegreen #017A79 ΔE 0.042
- Deep Aqua #08787F ΔE 0.042
- Slate #516572 ΔE 0.043
- Dark Aqua #05696B ΔE 0.044
- Dark Green Blue #1F6357 ΔE 0.055
- Teal #008080 ΔE 0.055
Use #3F6F69 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.