#3F7666
Closest named color: Bluegreen (#017A79). oklch(52.3% 0.064 172.8), rgb(63, 118, 102).
Aa
White text reads best on this color (5.25:1).
About this color
#3F7666 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.064 and its hue 173°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.037 away. White text reads best on it, at 5.25:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 3.99:1 |
| White text | 5.25:1 |
Values
| HEX | #3F7666 |
| RGB | rgb(63, 118, 102) |
| HSL | hsl(163, 30%, 35%) |
| OKLCH | oklch(52.3% 0.064 172.8) |
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 #3F7666 | 5.25:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #3F7666 | 3.99:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #3F7666 text on white | 5.25:1 | AA | Lc 76.0 | Fine for body text |
| #3F7666 text on black | 3.99:1 | AA large text | Lc -25.7 | 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
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CEDDD8
oklch(88.5% 0.017 174)
-
Step 300
300
#ADC8BE
oklch(81% 0.032 171.1)
-
Step 400
400
#81AB9D
oklch(70.7% 0.05 172.3)
-
Step 500
500
#609686
oklch(63% 0.063 173.5)
-
Step 600
600
#44816F
oklch(55.7% 0.07 172.4)
-
Step 700
700 (this color)
#3F7666
oklch(52.3% 0.064 172.8)
-
Step 800
800
#2D594C
oklch(42.8% 0.054 172.4)
-
Step 900
900
#29493F
oklch(37.7% 0.042 172)
-
Step 950
950
#192B25
oklch(27.1% 0.026 171.3)
#3F7666 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) | #737065 | 0.067 |
| Deuteranopia (no green cones) | #6A6967 | 0.064 |
| Tritanopia (no blue cones) | #2C7771 | 0.020 |
| Achromatopsia (no color) | #6C6C6C | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F7666
#3F7666
oklch(52.3% 0.064 172.8)
- #875A6D
#875A6D
oklch(52.2% 0.065 352.6)
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 #3F7666, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.037
- Dark Aquamarine #017371 ΔE 0.039
- Deep Turquoise #017374 ΔE 0.041
- Deep Aqua #08787F ΔE 0.044
- Teal #008080 ΔE 0.046
- Dark Aqua #05696B ΔE 0.060
- Slate #516572 ΔE 0.064
- Dim Gray #696969 ΔE 0.064
Use #3F7666 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.