#3F615F
Closest named color: Dark Green Blue (#1F6357). oklch(46.6% 0.04 191.2), rgb(63, 97, 95).
Aa
White text reads best on this color (6.80:1).
About this color
#3F615F is a medium-dark, muted teal or cyan. In OKLCH its lightness is 47%, its chroma 0.040 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.035 away. White text reads best on it, at 6.80:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.08:1 |
| White text | 6.80:1 |
Values
| HEX | #3F615F |
| RGB | rgb(63, 97, 95) |
| HSL | hsl(176, 21%, 31%) |
| OKLCH | oklch(46.6% 0.04 191.2) |
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 #3F615F | 6.80:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #3F615F | 3.08:1 | AA large text | Lc 20.6 | Dividers and decoration only |
| #3F615F text on white | 6.80:1 | AA | Lc 83.4 | Fine for body text |
| #3F615F text on black | 3.08:1 | AA large text | Lc -18.5 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E6EBEB
oklch(93.6% 0.005 197.1)
-
Step 200
200
#D2DBDB
oklch(88.5% 0.01 197)
-
Step 300
300
#B3C5C3
oklch(80.9% 0.02 188.7)
-
Step 400
400
#8CA7A5
oklch(70.7% 0.03 191)
-
Step 500
500
#6E918F
oklch(63% 0.039 191.8)
-
Step 600
600
#567C79
oklch(55.7% 0.043 189.8)
-
Step 700
700 (this color)
#3F615F
oklch(46.6% 0.04 191.2)
-
Step 800
800
#3A5553
oklch(42.7% 0.033 190.2)
-
Step 900
900
#324645
oklch(37.7% 0.025 192.3)
-
Step 950
950
#1D2928
oklch(26.9% 0.017 189.9)
#3F615F 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) | #5D5E5F | 0.041 |
| Deuteranopia (no green cones) | #57595F | 0.039 |
| Tritanopia (no blue cones) | #336360 | 0.013 |
| Achromatopsia (no color) | #5B5B5B | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F615F
#3F615F
oklch(46.6% 0.04 191.2)
- #6E5154
#6E5154
oklch(46.6% 0.039 11.8)
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 #3F615F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.035
- Dark Aqua #05696B ΔE 0.041
- Slate #516572 ΔE 0.041
- Petrol #005F6A ΔE 0.046
- YInMn Blue #415A77 ΔE 0.051
- Dark Aquamarine #017371 ΔE 0.059
- Deep Turquoise #017374 ΔE 0.060
- Dusty Grape #545775 ΔE 0.062
Use #3F615F 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.