#3F696B
Closest named color: Slate (#516572). oklch(49.1% 0.047 199.6), rgb(63, 105, 107).
Aa
White text reads best on this color (6.09:1).
About this color
#3F696B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 49%, its chroma 0.047 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.029 away. White text reads best on it, at 6.09:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.44:1 |
| White text | 6.09:1 |
Values
| HEX | #3F696B |
| RGB | rgb(63, 105, 107) |
| HSL | hsl(183, 26%, 33%) |
| OKLCH | oklch(49.1% 0.047 199.6) |
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 #3F696B | 6.09:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #3F696B | 3.44:1 | AA large text | Lc 23.7 | Dividers and decoration only |
| #3F696B text on white | 6.09:1 | AA | Lc 80.4 | Fine for body text |
| #3F696B text on black | 3.44:1 | AA large text | Lc -21.5 | 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
#D0DCDC
oklch(88.5% 0.013 196.9)
-
Step 300
300
#B0C5C6
oklch(80.8% 0.023 200.2)
-
Step 400
400
#87A8A9
oklch(70.7% 0.036 198.7)
-
Step 500
500
#689294
oklch(63% 0.046 199.8)
-
Step 600
600
#4E7D7F
oklch(55.7% 0.051 199.2)
-
Step 700
700 (this color)
#3F696B
oklch(49.1% 0.047 199.6)
-
Step 800
800
#345657
oklch(42.8% 0.04 198.2)
-
Step 900
900
#2E4748
oklch(37.8% 0.031 199.1)
-
Step 950
950
#1B292A
oklch(26.9% 0.019 201.6)
#3F696B 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) | #64656B | 0.049 |
| Deuteranopia (no green cones) | #5C606B | 0.044 |
| Tritanopia (no blue cones) | #2C6C69 | 0.020 |
| Achromatopsia (no color) | #626262 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F696B
#3F696B
oklch(49.1% 0.047 199.6)
- #795656
#795656
oklch(49% 0.047 18.9)
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 #3F696B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.029
- Dark Aqua #05696B ΔE 0.037
- Deep Turquoise #017374 ΔE 0.041
- Dark Aquamarine #017371 ΔE 0.041
- Dark Green Blue #1F6357 ΔE 0.048
- Deep Aqua #08787F ΔE 0.051
- Bluegreen #017A79 ΔE 0.054
- Dim Gray #696969 ΔE 0.056
Use #3F696B 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.