#3F7364
Closest named color: Dark Aquamarine (#017371). oklch(51.4% 0.061 173.1), rgb(63, 115, 100).
Aa
White text reads best on this color (5.45:1).
About this color
#3F7364 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 51%, its chroma 0.061 and its hue 173°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.037 away. White text reads best on it, at 5.45:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.84:1 |
| White text | 5.45:1 |
Values
| HEX | #3F7364 |
| RGB | rgb(63, 115, 100) |
| HSL | hsl(163, 29%, 35%) |
| OKLCH | oklch(51.4% 0.061 173.1) |
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 #3F7364 | 5.45:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #3F7364 | 3.84:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #3F7364 text on white | 5.45:1 | AA | Lc 77.1 | Fine for body text |
| #3F7364 text on black | 3.84:1 | AA large text | Lc -24.6 | 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
#CFDDD8
oklch(88.6% 0.016 172.6)
-
Step 300
300
#AEC7BF
oklch(80.9% 0.029 174.3)
-
Step 400
400
#83AB9E
oklch(70.8% 0.047 173)
-
Step 500
500
#629686
oklch(63.2% 0.061 172.9)
-
Step 600
600
#478070
oklch(55.6% 0.066 173.7)
-
Step 700
700 (this color)
#3F7364
oklch(51.4% 0.061 173.1)
-
Step 800
800
#2F584C
oklch(42.6% 0.051 172.9)
-
Step 900
900
#2A4940
oklch(37.8% 0.04 173.6)
-
Step 950
950
#192B25
oklch(27.1% 0.026 171.3)
#3F7364 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) | #706D63 | 0.064 |
| Deuteranopia (no green cones) | #676765 | 0.060 |
| Tritanopia (no blue cones) | #2D746F | 0.020 |
| Achromatopsia (no color) | #696969 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F7364
#3F7364
oklch(51.4% 0.061 173.1)
- #83596A
#83596A
oklch(51.4% 0.06 353.4)
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 #3F7364, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.037
- Deep Turquoise #017374 ΔE 0.039
- Bluegreen #017A79 ΔE 0.040
- Deep Aqua #08787F ΔE 0.045
- Teal #008080 ΔE 0.051
- Dark Aqua #05696B ΔE 0.054
- Slate #516572 ΔE 0.058
- Dark Green Blue #1F6357 ΔE 0.062
Use #3F7364 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.