#37745C
Closest named color: Dark Aquamarine (#017371). oklch(51.1% 0.075 165.5), rgb(55, 116, 92).
Aa
White text reads best on this color (5.50:1).
About this color
#37745C is a medium-dark, moderately saturated green. In OKLCH its lightness is 51%, its chroma 0.075 and its hue 166°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.040 away. White text reads best on it, at 5.50:1.
| Hue family | Greens |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.075) |
| Temperature | in between |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.81:1 |
| White text | 5.50:1 |
Values
| HEX | #37745C |
| RGB | rgb(55, 116, 92) |
| HSL | hsl(156, 36%, 34%) |
| OKLCH | oklch(51.1% 0.075 165.5) |
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 #37745C | 5.50:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #37745C | 3.81:1 | AA large text | Lc 26.7 | Dividers and decoration only |
| #37745C text on white | 5.50:1 | AA | Lc 77.3 | Fine for body text |
| #37745C text on black | 3.81:1 | AA large text | Lc -24.4 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE8
oklch(93.6% 0.01 164.9)
-
Step 200
200
#CEDED6
oklch(88.6% 0.02 164.5)
-
Step 300
300
#ACC8BB
oklch(80.8% 0.035 165.8)
-
Step 400
400
#7EAD98
oklch(70.8% 0.059 165.4)
-
Step 500
500
#5C987F
oklch(63.1% 0.074 165.7)
-
Step 600
600
#408268
oklch(55.5% 0.08 165.7)
-
Step 700
700 (this color)
#37745C
oklch(51.1% 0.075 165.5)
-
Step 800
800
#2A5A47
oklch(42.8% 0.062 165.5)
-
Step 900
900
#274A3B
oklch(37.8% 0.049 164.6)
-
Step 950
950
#172B23
oklch(26.9% 0.03 166.8)
#37745C 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) | #726D5B | 0.075 |
| Deuteranopia (no green cones) | #69665E | 0.073 |
| Tritanopia (no blue cones) | #21746D | 0.029 |
| Achromatopsia (no color) | #696969 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37745C
#37745C
oklch(51.1% 0.075 165.5)
- #855470
#855470
oklch(51% 0.076 344.9)
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 #37745C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.040
- Deep Turquoise #017374 ΔE 0.044
- Bluegreen #017A79 ΔE 0.045
- Deep Aqua #08787F ΔE 0.053
- Teal #008080 ΔE 0.056
- Dark Aqua #05696B ΔE 0.057
- Dark Moss Green #606C38 ΔE 0.059
- Dark Olive Green #556B2F ΔE 0.059
Use #37745C 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.