#3F755B
Closest named color: Dark Aquamarine (#017371). oklch(51.7% 0.072 161.5), rgb(63, 117, 91).
Aa
White text reads best on this color (5.37:1).
About this color
#3F755B is a medium-dark, moderately saturated green. In OKLCH its lightness is 52%, its chroma 0.072 and its hue 162°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.047 away. White text reads best on it, at 5.37:1.
| Hue family | Greens |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.072) |
| Temperature | in between |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.90:1 |
| White text | 5.37:1 |
Values
| HEX | #3F755B |
| RGB | rgb(63, 117, 91) |
| HSL | hsl(151, 30%, 35%) |
| OKLCH | oklch(51.7% 0.072 161.5) |
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 #3F755B | 5.37:1 | AA | Lc -82.0 | Fine for body text |
| Black text on #3F755B | 3.90:1 | AA large text | Lc 27.4 | Dividers and decoration only |
| #3F755B text on white | 5.37:1 | AA | Lc 76.7 | Fine for body text |
| #3F755B text on black | 3.90:1 | AA large text | Lc -25.1 | 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
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E4ECE8
oklch(93.6% 0.01 164.9)
-
Step 200
200
#CFDDD5
oklch(88.5% 0.019 161.1)
-
Step 300
300
#AEC8BA
oklch(80.9% 0.034 162.1)
-
Step 400
400
#82AC96
oklch(70.7% 0.056 161.7)
-
Step 500
500
#61977C
oklch(63.1% 0.071 161.7)
-
Step 600
600
#468165
oklch(55.5% 0.077 161.9)
-
Step 700
700 (this color)
#3F755B
oklch(51.7% 0.072 161.5)
-
Step 800
800
#2F5945
oklch(42.7% 0.058 161.9)
-
Step 900
900
#2A493A
oklch(37.6% 0.045 162.2)
-
Step 950
950
#192B22
oklch(27% 0.029 161.9)
#3F755B 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) | #746E5A | 0.070 |
| Deuteranopia (no green cones) | #6B685D | 0.067 |
| Tritanopia (no blue cones) | #30756E | 0.030 |
| Achromatopsia (no color) | #6A6A6A | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F755B
#3F755B
oklch(51.7% 0.072 161.5)
- #855774
#855774
oklch(51.7% 0.073 341.7)
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 #3F755B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.047
- Bluegreen #017A79 ΔE 0.048
- Deep Turquoise #017374 ΔE 0.050
- Dark Moss Green #606C38 ΔE 0.053
- Dark Olive Green #556B2F ΔE 0.056
- Deep Aqua #08787F ΔE 0.057
- Teal #008080 ΔE 0.057
- Dark Sage #598556 ΔE 0.062
Use #3F755B 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.