#3F615B
Closest named color: Dark Green Blue (#1F6357). oklch(46.5% 0.041 182.2), rgb(63, 97, 91).
Aa
White text reads best on this color (6.83:1).
About this color
#3F615B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.041 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.031 away. White text reads best on it, at 6.83:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.07:1 |
| White text | 6.83:1 |
Values
| HEX | #3F615B |
| RGB | rgb(63, 97, 91) |
| HSL | hsl(169, 21%, 31%) |
| OKLCH | oklch(46.5% 0.041 182.2) |
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 #3F615B | 6.83:1 | AA | Lc -88.5 | Fine for body text |
| Black text on #3F615B | 3.07:1 | AA large text | Lc 20.5 | Dividers and decoration only |
| #3F615B text on white | 6.83:1 | AA | Lc 83.6 | Fine for body text |
| #3F615B text on black | 3.07:1 | AA large text | Lc -18.4 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D2DCD9
oklch(88.6% 0.012 176.3)
-
Step 300
300
#B4C5C1
oklch(80.9% 0.019 180.1)
-
Step 400
400
#8CA7A2
oklch(70.6% 0.031 183)
-
Step 500
500
#6F928B
oklch(63.2% 0.04 181.3)
-
Step 600
600
#567C75
oklch(55.6% 0.044 181.9)
-
Step 700
700 (this color)
#3F615B
oklch(46.5% 0.041 182.2)
-
Step 800
800
#3A5550
oklch(42.6% 0.034 181.9)
-
Step 900
900
#324643
oklch(37.6% 0.026 184.7)
-
Step 950
950
#1E2927
oklch(27% 0.016 182.8)
#3F615B 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) | #5E5D5B | 0.044 |
| Deuteranopia (no green cones) | #58595C | 0.041 |
| Tritanopia (no blue cones) | #34625F | 0.012 |
| Achromatopsia (no color) | #5B5B5B | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F615B
#3F615B
oklch(46.5% 0.041 182.2)
- #6D5057
#6D5057
oklch(46.4% 0.04 2.8)
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 #3F615B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.031
- Dark Aqua #05696B ΔE 0.042
- Slate #516572 ΔE 0.046
- Petrol #005F6A ΔE 0.048
- YInMn Blue #415A77 ΔE 0.058
- Dark Aquamarine #017371 ΔE 0.060
- Deep Turquoise #017374 ΔE 0.061
- Dark Slate Gray #2F4F4F ΔE 0.062
Use #3F615B 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.