#3F706B
Closest named color: Dark Aquamarine (#017371). oklch(50.9% 0.054 187.2), rgb(63, 112, 107).
Aa
White text reads best on this color (5.61:1).
About this color
#3F706B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 51%, its chroma 0.054 and its hue 187°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.033 away. White text reads best on it, at 5.61:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.74:1 |
| White text | 5.61:1 |
Values
| HEX | #3F706B |
| RGB | rgb(63, 112, 107) |
| HSL | hsl(174, 28%, 34%) |
| OKLCH | oklch(50.9% 0.054 187.2) |
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 #3F706B | 5.61:1 | AA | Lc -83.2 | Fine for body text |
| Black text on #3F706B | 3.74:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #3F706B text on white | 5.61:1 | AA | Lc 78.0 | Fine for body text |
| #3F706B text on black | 3.74:1 | AA large text | Lc -23.8 | 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
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#CFDCDB
oklch(88.4% 0.014 191.4)
-
Step 300
300
#AFC6C3
oklch(80.8% 0.025 187.2)
-
Step 400
400
#83A9A5
oklch(70.6% 0.042 188.3)
-
Step 500
500
#63948F
oklch(63% 0.053 187.9)
-
Step 600
600
#497F79
oklch(55.7% 0.059 186.5)
-
Step 700
700 (this color)
#3F706B
oklch(50.9% 0.054 187.2)
-
Step 800
800
#305753
oklch(42.7% 0.045 187.2)
-
Step 900
900
#2B4845
oklch(37.8% 0.035 187.5)
-
Step 950
950
#1A2A28
oklch(27% 0.022 186.2)
#3F706B 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) | #6B6B6B | 0.057 |
| Deuteranopia (no green cones) | #63656C | 0.054 |
| Tritanopia (no blue cones) | #2B726E | 0.017 |
| Achromatopsia (no color) | #686868 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F706B
#3F706B
oklch(50.9% 0.054 187.2)
- #815960
#815960
oklch(50.9% 0.054 7.6)
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 #3F706B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.033
- Deep Turquoise #017374 ΔE 0.034
- Bluegreen #017A79 ΔE 0.039
- Deep Aqua #08787F ΔE 0.040
- Slate #516572 ΔE 0.043
- Dark Aqua #05696B ΔE 0.045
- Teal #008080 ΔE 0.052
- Dim Gray #696969 ΔE 0.055
Use #3F706B 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.