#3F6C63
Closest named color: Dark Aquamarine (#017371). oklch(49.6% 0.052 179.8), rgb(63, 108, 99).
Aa
White text reads best on this color (5.93:1).
About this color
#3F6C63 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 50%, its chroma 0.052 and its hue 180°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.038 away. White text reads best on it, at 5.93:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.53:1 |
| White text | 5.93:1 |
Values
| HEX | #3F6C63 |
| RGB | rgb(63, 108, 99) |
| HSL | hsl(168, 26%, 34%) |
| OKLCH | oklch(49.6% 0.052 179.8) |
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 #3F6C63 | 5.93:1 | AA | Lc -84.8 | Fine for body text |
| Black text on #3F6C63 | 3.53:1 | AA large text | Lc 24.5 | Dividers and decoration only |
| #3F6C63 text on white | 5.93:1 | AA | Lc 79.6 | Fine for body text |
| #3F6C63 text on black | 3.53:1 | AA large text | Lc -22.2 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5EBEA
oklch(93.5% 0.007 185.3)
-
Step 200
200
#D0DCD9
oklch(88.5% 0.014 179.4)
-
Step 300
300
#B0C6C1
oklch(80.8% 0.025 180.5)
-
Step 400
400
#86A9A1
oklch(70.6% 0.04 179.6)
-
Step 500
500
#67948A
oklch(63.1% 0.051 179.2)
-
Step 600
600
#4D7E74
oklch(55.5% 0.056 179.7)
-
Step 700
700 (this color)
#3F6C63
oklch(49.6% 0.052 179.8)
-
Step 800
800
#335750
oklch(42.7% 0.043 180.4)
-
Step 900
900
#2D4842
oklch(37.8% 0.035 178.8)
-
Step 950
950
#1B2A27
oklch(27% 0.021 180.8)
#3F6C63 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) | #696763 | 0.056 |
| Deuteranopia (no green cones) | #616164 | 0.054 |
| Tritanopia (no blue cones) | #2F6D69 | 0.016 |
| Achromatopsia (no color) | #646464 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F6C63
#3F6C63
oklch(49.6% 0.052 179.8)
- #7B5661
#7B5661
oklch(49.6% 0.051 359.7)
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 #3F6C63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.038
- Deep Turquoise #017374 ΔE 0.039
- Dark Aqua #05696B ΔE 0.040
- Slate #516572 ΔE 0.044
- Dark Green Blue #1F6357 ΔE 0.046
- Bluegreen #017A79 ΔE 0.050
- Deep Aqua #08787F ΔE 0.051
- Dim Gray #696969 ΔE 0.058
Use #3F6C63 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.